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My project Reshape (https://github.com/fabianlindfors/reshape) might be interesting to you, it's a bit like blue/green DB deployments in that it uses a two-step process where it can support both the old and the new schema at the same time during the deployment phase.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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bytebase
The GitHub/GitLab for database DevSecOps. World's most advanced database DevSecOps solution for Developer, Security, DBA and Platform Engineering teams.
This post addresses the data migration specifics well. Besides, there is the part about scaling the organization to deploy database migrations. We've built a project https://github.com/bytebase/bytebase to address this.
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