Did you design it yourself or come across the design somewhere? I follow mechanical keyboards on and off but never seen this design before. I guess it's missing multiply/divide but generally it makes a lot of sense, especially for how compact it is.

the design was based on the candybar (https://thekey.company/collections/candybar) but there are a lot of similar boards as well.

I've been keeping my eye out on the subreddit for a long time for something like your 50% - except with a function row. Really wish it were more popular