Is there something equivalent for LunarVim[0] or NvChad[1], in Vim ecosystem? I want to try something different. I learn a lot hacking around these opinionated setups.
Yes, there is spacevim: https://spacevim.org
For emacs with vim keybindings, there is also Spacemacs https://www.spacemacs.org/
Doom Emacs is a better alternative IMO (having used both extensively).