The current Thinkpad Wired USB Keyboard with Trackpoint matches the layout on current Thinkpads (i.e. later than T430, X230, ...).
I preferred the predecessor model as better built, matching the original Thinkpad keyboard layouts (i.e. earlier than T420, X220, ...). However, that model has been discontinued for some years, and available on eBay only at outrageous prices.
The external keyboard, as an alternative to a built-in keyboard on a Thinkpad, has been a standard for me for many decades. Way back, the company had to get the built-in keyboard replaced because I have a heavy touch, and would wear it out. It's much cheaper (and ergonomically better) to have an external keyboard that plugs into my Thinkpad dock, that is field-replaceable. I'm so used to the Trackpoint that working on a trackpad or mouse really slows me down.