I was using an X230, later a T480s with macOS between 2017 and 2020 when Apple decided to only sell glued-together unfixable devices with butterfly keyboard. Loved the key-travel, repairability, docking stations - but also the quick switch between keyboard and trackpoint. Even configured some gesture-combinations with the trackpoint (e.g. right click + trackpoint swipe to left = navigate back). Switched back to MacBook after apple released silicon macs and improved the keyboards but always good to have a backup ThinkPad.

Lenovo keyboard case for iPad Pro would be a starting point.

I'd live a Lenovo with a Mac trackpad. I owned a P1 and the trackpad was horrendous.

I got the standalone thinkpad Bluetooth keyboard and the Magic Trackpad. I 3d printed a case and voila.