Comment by leejoramo

Beyond the UHK keyboards there are others with trackpoints

TEX had a whole line https://tex.com.tw/products/shura

The classic Happy Hackers Keyboard has one. https://hhkeyboard.us/hhkb-studio/product

And Lenovo itself offers several usb keyboards with TrackPoint https://www.amazon.com/dp/B00F3U4TQS