Most of my typing is in emacs, so having the ctrl/alt modifiers on the thumb clusters was important for me; it lets me navigate easily without moving my fingers much.
Redox layout (which is closer to stock) is here - this is for QMK Configurator: https://github.com/jfrederickson/dotfiles/blob/master/keyboa...
Less customizations there, though I swapped ctrl/alt to match my ergodox layout.