The [Kinesis Freestyle Edge](https://gaming.kinesis-ergo.com/edge/) is what you want. It's a full keyboard, with extra keys you can map, and you can choose what switch you want. It's marketed for gamers, but it's good for everyone.
My one complaint is I find the space bar too large. I started used the Freestyle after decades of MS Natural keyboards. It took a while to get used to the size of the space bar.