While it is nice to have options, I still think iTerm2 is one of the best terminal emulators for OS X out there. It has also most likely been audited more thoroughly than newer options out there. There was a security audit sponsored by Mozilla in 2019 [1].
Written in Rust is nice, but it also uses `libssh` which has a history of security issues and bad support for recent ciphers. Would be interesting if it also has issues with terminal escape sequences.
I'm not sure I want any features in my terminal at this point...
I had major slow down in wexterm on my MBA. I didn't really look into it because the terminal is something I want to install and forget about, so the solution may be trivial. But it was so laggy as to be unusable.
It's a bit heavy, but I've liked Tabby outside Windows a bit... I really like the new Windows terminal from MS, but it's Windows only, Tabby is about the closest I've found to it.
1. https://blog.mozilla.org/security/2019/10/09/iterm2-critical...