Something like this? The heavy stagger is great, 42 keys is almost perfect, but the thumb placement is – for me – horrible. Having to move my thumb to practically under my palm is just terrible ergonomics.
This thumb layout reminds me more of the ErgoDox variants, and is far better placement. Is there a layout close to this?
Have you looked at https://compare.splitkb.com/ yet?
Gosh, yes, love that site. I don’t use it much since it’s almost impossible for it to stay comprehensive; for example, it’s missing both the Piantor and Piantor Pro, and the Piantor had been around for a couple years at least.
It is a wonderful tool, though. I think it’d be a full time job to keep it current with all commercially available keyboards, much less all of the bespoke builds.