Here are the current Neovim mappings I came to feel comfortable with over time. This is by no means a reference card, and yes I do use the arrow keys for navigating into my buffers. It depends on motion range, though. Another key idea is that I use Tmux everyday and I like to have an unified set of mappings, beside the leader/prefix key. See my blog posts for how I started to use Vim and Neovim.

Note that I only have a dozen of plugins in my start and opt directories, in addition to part of mini.nvim that I adapted to suit my needs better: (This may change in the future but usually I tend to remove plugins rather than add new ones.¹ )

• [opt] nvim-treesitter, nvim-treesitter-textobjects, Comment.nvim, nvim-lspconfig, null-ls.nvim, plenary (dep), neogen, nvim-parinfer, nvim-lightbulb, vimtex, nvim-colorizer gitsigns.nvim;
• [start] packer.nvim, fzf-lua

I prefer a minimalist setup these days, and I tend to rely on hand-on solutions for tasks I carry over and over. Many of those custom settings come from briliant Vimers who are acknowledged in my config files. Note that some of those mappings may override existing ones, whether they are somewhat redundant (e.g. s and c) or because I don’t use them at all (e.g., some of the Ctrl, g or z combinations).

My leader is “,"² and I do not define specific mappings for the localleader in my main config files. It looks like I always misunderstood the role of the localleader, and I decided to book it for my after/ftplugin custom settings.

I also have kind of an universal mapping, gs, which depending on filetype may compile a $\LaTeX$ document or a C file and show its output, run a Python/Haskell/Lisp/Scheme script and show its output, etc. It is defined in relevant after/ftplugin/*.vim files. Finally, since I never found a good or reliable plugin to send command to a terminal, and I’ve tried many of the exiting ones for Vim or Neovim, I wrote my own commands: (It assumes that you have a terminal opened next to your buffer in a split, which is how I work in any case.)

" poor man send-to-repl features (we need to fire a REPL in a split first)
noremap ss Vy<C-w>wpa<CR><C-\><C-n><C-w>pj
noremap s y<C-w>wpa<CR><C-\><C-n><C-w>p
xnoremap s y<C-w>wpa<CR><C-\><C-n><C-w>p