Similar to a sibling comment, and perhaps not really applicable (since this isn't a company making something people can buy...), but the MNT Reform is amenable to fitting a custom/ergonomic keyboard also (I hadn't seen the Framework in the sibling comment, it looks very cool!).

I don't know how to link to it directly, but midway down this article there's a picture and some more links of an MNT Reform (apparently completely home-built) with a very cool, "thumb-centric", column staggered ergo keyboard:

https://mntre.com/media/reform_md/2022-07-01-july-update.htm...

(search for "More great mods from the community..." heading if interested)

I would very much like to have a keyboard like either of those on my laptop. The stares you'd get when in public!!