qmk-firmware/layouts/community/60_ansi_split_bs_rshift/bcat/readme.md

bcat's 60% ANSI split backspace/right-shift layout

This is a hybrid of an HHKB layout and a standard ANSI bottom row. It's nice if you want to fill out a 60% case with no blockers, or just really want a 6.25U spacebar. The arrow and navigation keys match a standard HHKB layout (using the Fn key next to the right shift key), but the media keys are centered around the WASD cluster instead of the usual HHKB layout. Additionally, the redundant Fn key on the bottom row activates an adjust layer to control RGB underglow.

Default layer

Function layer

Adjust layer