Can anyone link me a site that has all of the commands that can be used for keymaps?

I’m finding undo a little slow (2.8), I found that there is such a thing as undo history, it looks great, but my hotkey isn’t set for it and because the keymap area has a bunch of stuff labeled “call menu” (very helpful), I wanted to find the little blob of code I can paste into a new keymap myself.

I’m sure I saw a website which has all of the codes for each command in the keymap area but I can’t remember exactly what it was called.