diff --git a/.github/actions/run-mf-tests/action.yaml b/.github/actions/run-mf-tests/action.yaml
index e1ba3c0833..cce6ef48e5 100644
--- a/.github/actions/run-mf-tests/action.yaml
+++ b/.github/actions/run-mf-tests/action.yaml
@@ -4,7 +4,8 @@ description: Runs MetricFlow using the specified Python version and engine setti
 inputs:
   python-version:
     description: "Version of Python to use for testing."
-    required: true
+    required: False
+    default: "3.9"
   mf_sql_engine_url:
     description: "URL for configuring SQL engine connection."
     required: false
@@ -39,12 +40,11 @@ inputs:
 runs:
   using: "composite"
   steps:
-  - name: Setup Python ${{ inputs.python-version }} Environment
-    uses: ./.github/actions/setup-python-env
+  - uses: ./.github/actions/setup-python-env
     with:
       python-version: "${{ inputs.python-version }}"
       hatch-environment-cache-config-json: "${{ inputs.hatch-environment-cache-config-json }}"
-  - name: Run Tests
+  - name: Run Tests w/ Python ${{ inputs.python-version }}
     shell: bash
     run: >
       make -e
diff --git a/.github/workflows/cd-push-dbt-metricflow-to-pypi.yaml b/.github/workflows/cd-push-dbt-metricflow-to-pypi.yaml
index 93012ac732..c89fcf129e 100644
--- a/.github/workflows/cd-push-dbt-metricflow-to-pypi.yaml
+++ b/.github/workflows/cd-push-dbt-metricflow-to-pypi.yaml
@@ -6,9 +6,6 @@ on:
     tags:
       - "dbt-metricflow/v[0-9]+.[0-9]+.[0-9]+*"
 
-env:
-  PYTHON_VERSION: "3.9"
-
 jobs:
   pypi-publish:
     runs-on: ubuntu-latest
@@ -21,10 +18,7 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Setup Python ${{ env.PYTHON_VERSION }} Environment
-        uses: ./.github/actions/setup-python-env
-        with:
-          python-version: "${{ env.PYTHON_VERSION }}"
+      - uses: ./.github/actions/setup-python-env
 
       - name: Build `dbt-metricflow` package
         working-directory: ./dbt-metricflow
diff --git a/.github/workflows/cd-push-metricflow-to-pypi.yaml b/.github/workflows/cd-push-metricflow-to-pypi.yaml
index f64dab0c5e..235839e2df 100644
--- a/.github/workflows/cd-push-metricflow-to-pypi.yaml
+++ b/.github/workflows/cd-push-metricflow-to-pypi.yaml
@@ -7,9 +7,6 @@ on:
     tags:
       - "v[0-9]+.[0-9]+.[0-9]+*"
 
-env:
-  PYTHON_VERSION: "3.9"
-
 jobs:
   pypi-publish:
     runs-on: ubuntu-latest
@@ -22,10 +19,7 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Setup Python ${{ env.PYTHON_VERSION }} Environment
-        uses: ./.github/actions/setup-python-env
-        with:
-          python-version: "${{ env.PYTHON_VERSION }}"
+      - uses: ./.github/actions/setup-python-env
 
       - name: Build `metricflow` package
         run: hatch build
diff --git a/.github/workflows/cd-sql-engine-populate-persistent-source-schema.yaml b/.github/workflows/cd-sql-engine-populate-persistent-source-schema.yaml
index 17e2dace3f..d086da661d 100644
--- a/.github/workflows/cd-sql-engine-populate-persistent-source-schema.yaml
+++ b/.github/workflows/cd-sql-engine-populate-persistent-source-schema.yaml
@@ -15,7 +15,6 @@ on:
 
 env:
   # Unclear on how to make 'Reload Test Data in SQL Engines' a constant here as it does not work here.
-  PYTHON_VERSION: "3.8"
   ADDITIONAL_PYTEST_OPTIONS: "--log-cli-level info"
 
 jobs:
@@ -28,10 +27,9 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Populate w/Python ${{ env.PYTHON_VERSION }}
+      - name: Populate Snowflake
         uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_SNOWFLAKE_URL }}
           mf_sql_engine_password: ${{ secrets.MF_SNOWFLAKE_PWD }}
           parallelism: 1
@@ -47,10 +45,9 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Populate w/Python ${{ env.PYTHON_VERSION }}
+      - name: Populate Redshift
         uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_REDSHIFT_URL }}
           mf_sql_engine_password: ${{ secrets.MF_REDSHIFT_PWD }}
           parallelism: 1
@@ -66,10 +63,9 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Populate w/Python ${{ env.PYTHON_VERSION }}
+      - name: Populate BigQuery
         uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           MF_SQL_ENGINE_URL: ${{ secrets.MF_BIGQUERY_URL }}
           MF_SQL_ENGINE_PASSWORD: ${{ secrets.MF_BIGQUERY_PWD }}
           parallelism: 1
@@ -85,10 +81,9 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Populate w/Python ${{ env.PYTHON_VERSION }}
+      - name: Populate Databricks
         uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_DATABRICKS_URL }}
           mf_sql_engine_password: ${{ secrets.MF_DATABRICKS_PWD }}
           parallelism: 1
diff --git a/.github/workflows/cd-sql-engine-tests.yaml b/.github/workflows/cd-sql-engine-tests.yaml
index fb71a80b04..5e6314ed05 100644
--- a/.github/workflows/cd-sql-engine-tests.yaml
+++ b/.github/workflows/cd-sql-engine-tests.yaml
@@ -9,7 +9,6 @@ on:
     types: [labeled]
 
 env:
-  PYTHON_VERSION: "3.8"
   EXTERNAL_ENGINE_TEST_PARALLELISM: 8
   ADDITIONAL_PYTEST_OPTIONS: "--use-persistent-source-schema"
 
@@ -25,10 +24,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python ${{ env.PYTHON_VERSION }}
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_SNOWFLAKE_URL }}
           mf_sql_engine_password: ${{ secrets.MF_SNOWFLAKE_PWD }}
           parallelism: ${{ env.EXTERNAL_ENGINE_TEST_PARALLELISM }}
@@ -50,10 +47,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python ${{ env.PYTHON_VERSION }}
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_REDSHIFT_URL }}
           mf_sql_engine_password: ${{ secrets.MF_REDSHIFT_PWD }}
           parallelism: ${{ env.EXTERNAL_ENGINE_TEST_PARALLELISM }}
@@ -75,10 +70,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python ${{ env.PYTHON_VERSION }}
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           MF_SQL_ENGINE_URL: ${{ secrets.MF_BIGQUERY_URL }}
           MF_SQL_ENGINE_PASSWORD: ${{ secrets.MF_BIGQUERY_PWD }}
           parallelism: ${{ env.EXTERNAL_ENGINE_TEST_PARALLELISM }}
@@ -100,10 +93,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python ${{ env.PYTHON_VERSION }}
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: ${{ env.PYTHON_VERSION }}
           mf_sql_engine_url: ${{ secrets.MF_DATABRICKS_URL }}
           mf_sql_engine_password: ${{ secrets.MF_DATABRICKS_PWD }}
           parallelism: ${{ env.EXTERNAL_ENGINE_TEST_PARALLELISM }}
@@ -133,10 +124,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python 3.12
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: "3.12"
           make-target: "test-trino"
           hatch-environment-cache-config-json: >-
             {
diff --git a/.github/workflows/ci-linting.yaml b/.github/workflows/ci-linting.yaml
index f0157dd8fd..614464c586 100644
--- a/.github/workflows/ci-linting.yaml
+++ b/.github/workflows/ci-linting.yaml
@@ -17,17 +17,13 @@ jobs:
   pre-commit:
     name: Run Pre-Commit Linting Hooks
     runs-on: ubuntu-latest
-    env:
-      python-version: "3.8"
     steps:
 
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Setup Python ${{ env.python-version }} Environment
-        uses: ./.github/actions/setup-python-env
+      - uses: ./.github/actions/setup-python-env
         with:
-          python-version: "${{ env.python-version }}"
           hatch-environment-cache-config-json: >-
             {
               "configs": [
diff --git a/.github/workflows/ci-metricflow-unit-tests.yaml b/.github/workflows/ci-metricflow-unit-tests.yaml
index cda67f00bc..4470bcda81 100644
--- a/.github/workflows/ci-metricflow-unit-tests.yaml
+++ b/.github/workflows/ci-metricflow-unit-tests.yaml
@@ -19,8 +19,7 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python ${{ matrix.python-version }}
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
           python-version: ${{ matrix.python-version }}
           make-target: "test-include-slow"
@@ -47,10 +46,8 @@ jobs:
       - name: Check-out the repo
         uses: actions/checkout@v4
 
-      - name: Test w/ Python 3.12
-        uses: ./.github/actions/run-mf-tests
+      - uses: ./.github/actions/run-mf-tests
         with:
-          python-version: "3.12"
           make-target: "test-postgresql"
           hatch-environment-cache-config-json: >-
             {