[drbaba]

> The eMacs ones are a bit more common in more applications

I think it depends on your platform? On macOS, nearly all apps support a (very small) subset of Emacs keybindings. On all platforms, Readline and friends default to Emacs keybindings (but do support Vi).

On the other hand, many classic UNIX utilities - for instance `less` - also implement Vi-like keybindings for navigation and search. There’s lots of third-party TUI applications that copied some keybindings from Vim. Many GUI applications (e.g. Sublime, VSCode, Firefox, Chrome, Google Docs, Obsidian, …) have support for Vim keybindings either as a popular plugin or bundled.

My guess would be that more apps support Vim keybindings than Emacs keybindings, simply because Emacs users would prefer to implement their needs (email, notes, …) inside Emacs instead of going to a third-party app. But I don’t have statistics to back that up, just subjective observations :)