I recommend that you try out WezTerm[1]. I used Warp before switching to WezTerm, but Warp took always a long time to open the first time. WezTerm on the other hand is extremely snappy and easy to configure. After having tried iTerm2, Alacritty, Kitty, Warp and others I might be forgetting, I don't think I'll ever move away from WezTerm. It just works.
I've tried WezTerm, and it seemed good. But, I didn't see anything better that iTerm. (Aside from the name not being "WezTerm2" :-/ ) And even though I use only maybe 8% of iTems's features, that's still a significant number of great features no other terminal that I know of has.
I've also tried all the others you mention. I actually like Konsole from KDE the second best, I think.
But none of them come even close to iTerm, except... it doesn't run on my main computers, so I have to find a Mac and SSH into my main (Linux) machines.
What I want is iTerm (minus confusing version iTerm 2 v 3.x naming stuff), that work on Linux also. (Extremely unlikely to ever exist, I know... just stating my wants.)
And maybe also with a Termius-style "persist all your bookmarks and saved configs to the cloud so that with one commmand you have them all on any machine".
[1]: https://wezfurlong.org/wezterm/index.html