Not sure if you're familiar with it, but Glove80 which the parent comment you were replying to is very similar to Kinesis boards (concave keywell, staggered columnar layout, etc.) but leverages a lot of the open source stuff like ZMK firmware that Kinesis doesn't support https://www.moergo.com/

Edit: nevermind, I just learned that the advantage360 pro uses ZMK as well. Either way, they both seem like great options for people who prioritize the ergonomics over aesthetics :)

Why stop there when you could go for a Charybdis and get the purer form of zmk and a trackball option