I have always been a fan of the trackpoint. The Ultimate Hacking Keyboard is a split keyboard with trackpoint, trackball, and touchpad modules (choose one). https://ultimatehackingkeyboard.com/shop

I am excited for the upcoming release of the dygma raise 2 because it has integrated 60 degree tenting in addition to being split. It has a module system as well which will hopefully offer trackpoint. https://dygma.com/pages/dygma-raise-2

I am happy using the NuPhy Air v2 as my portable keyboard. I love the low profile- not for looks, but for better ergonomics and portability. No track point though!