Summary of the feature request

Consolidate package level mypy.ini file contents into a single global file at the monorepo root level.

Current State: 9 packages define their own mypy.ini.
Similarity Profile: The 9 files fall into only 3 identical variations. Variation 1 is shared by 6 packages, and Variation 2 is shared by 2 packages.
Why it's a prime candidate: Mypy configurations are mostly boilerplate rules specifying strict mode, error codes, and global exclusions.

Recommendation:
Move these rules to a single mypy.ini in the repository root.
Use Mypy’s native section overrides (e.g. [mypy-google.cloud.datastore.*]) in the master root configuration if package-specific exceptions are needed, allowing you to safely delete all per-package files.