Sadly, the Thinkpad X230 seems to be replaced by the newer X240 now. Any idea if it's working just as well? I probably can still get a refurbished X230 somewhere, but the screen is a bit too bad :(.
X series laptops have historically had a lot of screen options to choose from if one wishes to upgrade. I have a X201s with an IPS from the tablet version I swapped in. 400+ nit outdoor panel, couldn't be happier with it.
I installed FreeBSD on it last night and apparently everything was detected and seems to be working fine.
The FreeBSD wiki has a Laptops page: https://wiki.freebsd.org/Laptops