Logitech used to make a split keyboard -- it was the first split keyboard I owned. It had normal keys rather than the low-profile ones I dislike.

This year, they introduced a low-profile split keyboard [1], but wanting a normal-profile one is what led me to assemble a DIY kit myself.

[1] $130: https://www.logitech.com/en-us/products/keyboards/k860-split...