What about libreSSL, the other fork?
https://github.com/libressl/portable#compatibility-with-open...
https://github.com/libressl/portable#compatibility-with-open...
https://marc.info/?l=openbsd-misc&m=168674593912952&w=2
and the reply:
https://marc.info/?l=openbsd-misc&m=168675478419177&w=2
Edit: certainly, if you don't need what isn't there, LibreSSL could be a viable replacement.