I'd like to compile a list of commonly used 61-key and smaller keyboard layouts, and in particular, layouts from boards that are MX-based. I only know of a few, and so I figured the community would be able to fill in the gaps.
To start:
1. Pok3r
2. Planck
3. JD40
There are a lot of boards that have the same layout as the Pok3r and we don't need to list them since it is the layouts I'm after, not the boards themselves.