I'm actually thinking my next Thinkpad should have an AMD processor. Intel is just not doing well.

There isn't currently an X1 with AMD, but the T14s with a Ryzen apparently has much better battery life than the Intel model, especially under load.

https://www.notebookcheck.net/Lenovo-ThinkPad-T14s-G3-AMD-laptop-review-Quiet-and-efficient-workhorse-with-Ryzen-power.682906.0.html