For me the most important are split layout and portability. The cups and thumb layouts are just icing on the cake, tenting on a flat layout would be sufficient

For me the most important are split layout and portability. The cups and thumb layouts are just icing on the cake, tenting on a flat layout would be sufficient too. Iris and dactyl look like the sort of things I’m thinking, though I’d probably want to find a way to either have f keys or configure some of those thumb keys to hit certain common f keys, I assume that’s doable though! Thanks for the resources, just mentioning names and where to look really helps :)