Zsh.

Omg looks like people think omz is a shell.

I personally like xonsh despite the minor amount of wonkiness it has, it’s so nice to have python available directly in your shell, it takes the “i don’t care about the quality of my code i just want this shit to work with minimal effort”-ness of bash and turns it up to 13.

https://ohmyz.sh/

I use fish which is quite nice OOTB, although if you want a posix compliant shell, zsh with some plugins is also great.