Does anyone know of a good/working GraphQL server solution on top of MySQL with thousands of tables?

AWS AppSync: AWS AppSync is a fully managed GraphQL service that can directly integrate with Amazon Aurora databases (MySQL and PostgreSQL) through the Amazon RDS Data API. AppSync can automatically introspect your database schema and generate a GraphQL API with the appropriate types and resolvers. This can be a good option if you want a fully managed GraphQL service that handles the infrastructure and scaling for you.

AWS Amplify: AWS Amplify now supports using existing MySQL and PostgreSQL databases for creating GraphQL APIs. Amplify's Cloud Development Kit construct allows you to connect your existing relational data to a GraphQL API, including features like authorization rules and custom queries/mutations.

Custom GraphQL Server: If you prefer more control over the GraphQL server implementation, you can consider building a custom GraphQL server using a framework like Apollo Server or GraphQL.js. These allow you to connect to your MySQL database and define the GraphQL schema and resolvers yourself. This approach provides more flexibility but requires more development effort.