I’ve always just used konsole or gnome terminal. Never really looked into what else is available. Tried cool-retro-term the other day, but the novelty wore off pretty fast for me.
Curious to see if there’s a terminal someone swears by and refuses to use anything else.
Every “terminal app” is a terminal emulator, because non-emulated terminals are physical pieces of hardware.
So you are already using a terminal emulator, I’d guess Gnome Terminal, and it’s a fairly full featured modern terminal emulator (in my opinion at least).