[acchow]

I've had Caps Lock mapped to escape for years. You used to need some tool to do this, but now you can do it right inside Keyboard settings "Modifier Keys".

Make sure you choose the real keyboard if you also have a Yubikey plugged in :)

[sic1]

I map caplocks to control, I find the default control button in a weird spot to always be moving my pinky to (and I hardly have a use for caplocks, like yourself). However, after you said this, it reminded me of the comment I caught once where someone had their caplocks setup to be esc on click, or control on hold... no idea how he had it setup, though I'm curious once again.

[narimiran]

> someone had their caplocks setup to be esc on click, or control on hold

I have this setup, and it is great. After you switch capslock to be Ctrl, just run (at startup):

    xcape -e 'Control_L=Escape'

[pseudalopex]

Karabiner Elements can do that.