Yep use doom myself.

Yup, Doom Emacs is definitely pretty lit. If it wasn't clear already, the gif in the post has been made with it.

FWIW, I actually started using Emacs through Spacemacs. And, honestly, I don't know if either one of the two has technical merit over the other. However, at some point, when I was working with (slightly) larger files, I just clearly started to notice input lag. Mind you, my laptop is starting to show his age, but input lag isn't something I was used to experience otherwise. As such, out of frustration, I pivoted to Doom and the rest has been history 😅.