>>3386755EF-M or RF can theoretically be done. But if an FD-RF adaptor exists yet I'll eat my hat.
Everything else, no. FD flange distance is a few mm shorter than EF, which means that without an optical correction element in between you wont be able to reach infinity focus.
There was a canon part to do it - it only worked with the really expensive FD telephotos. It's now rediculously expensive itself.
Chinese knockoffs are universally bad optically
