This is Sendy YK's [60% ANSI Arrow Layout](https://github.com/qmk/qmk_firmware/blob/master/layouts/default/60_ansi_arrow/info.json) and [Keymap (with RGB Lighting/LED/Underglow as Caps Lock, Num Lock, Scroll Lock, and Layer Indicator)](https://github.com/qmk/qmk_firmware/blob/master/layouts/community/60_ansi_arrow/mrsendyyk/keymap.c).