How does Drogon compare to other C++ frameworks?

For the database layer, I am currently weighing up ODB, Oat++, SOCI, cppdb, and sqlpp11 [if sqlpp adds support for CREATE TABLE]. You here at drogon seem to have your own ORM layer, but with only PostgreSQL and MySQL support I'm a little worried from a testing and server-less perspective (really would be nice to see support for an embedded database like SQLite).

For the REST API layer I haven't started investigating, although do remember actix being dethroned and a C++ framework taking its place (which is how I found myself here!).

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I am planning to use LLVM (clang, libclang, libtooling) to synchronise [bidirectionally] OpenAPI with C++ code. I've done the same in Python, and WiP for Rust, Swift, Java, Kotlin, and TypeScript.

With my compiler driven approach, I expect people to be able to rapidly produce REST API + db backends with full test and doc coverage, and be able to immediately translate the interfaces across language boundaries (e.g., to frontends, or to rewrite a slow-performing Python backend in C++ or Rust).

Currently focussing on the non-Turing-complete as aspect of this, translating just the interfaces, tests, docs, defaults, and types.

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I am writing tools to allow engineers to develop faster, and with higher quality. Will only target one ORM and one REST API layer for C++, at least in the short-term.

So my question is, and I understand that posting here will provide a heavily biased answer, how do I decide between the various C++ frameworks?

Thanks