I use configured zsh which has majority of features mentioned above. It is integrated with fzf and also has autcompletions(with help description), autosuggestions,hints, file completions and more. You can see my zsh dotfiles below.

https://github.com/varbhat/dotfiles/tree/main/dot_config/zsh

I could even have enabled real time type ahead completions with this plugin but i haven't (because i don't need this feature) : https://github.com/marlonrichert/zsh-autocomplete

i use my current configuration on foot terminal (which itself is blazing fast and boasts fastest vtt parser) in linux and kitty terminal (which is very feature rich, even has terminal graphics protocol so that you can even run glxgears(opengl cube demo: https://github.com/michaeljclark/glkitty) on it) on linux and macos.

i am sure that other shells such has fish also have these features.

So, what benefits do i get on switching to warp? currently,i don't see any except few marketing words which aren't enough for me to start using warp.

I might be missing something but i am all ears.