The quick version without all the vague distro talk and a few more Thinkpads thrown in.

Current T14/X1/X13 laptops need at least a 5.19 kernel to work but 5.19 is buggy on them in multiple ways and should be avoided. 6.x kernels are very solid with these Thinkpads. Slackware current on my X13 was the most effortless linux install I have ever had on a Thinkpad, everything worked from the start.