Sure, I am familiar with them all (there's another decent Rust cpp gen one too). That's what I was alluding to with "I am aware of many efforts in many language

Sure, I am familiar with them all (there's another decent Rust cpp gen one too). That's what I was alluding to with "I am aware of many efforts in many languages that just use the C++ API directly by essentially building their own C API layer." Unfortunately each binding has to do this themselves because there's not a blessed C API.