May want to give Apollo a try: https://github.com/ClassicOldSong/Apollo (re Sunshine)
Try https://starship.rs then. Starship gives you the same "drop in and go" experience but without the 200ms+ prompt lag. One curl -> one line in your rc file, works on zsh/bash/fish/whatever.
Configuration is straightforward and easy imo: https://starship.rs/config/
Give it a spin, I think you won't regret it.