I would not personally recommend Iris Xe chipsets right now. My Dell 5320 (11th gen i5, Iris Xe, 16GB) machine crashes consistently with Zwift.
There’s a lot of stuff on Google about people experiencing issues with games crashing, the Surface Laptop 3 in this thread has a slightly different Iris Plus, but posted my account there:
Surface Laptop 3 - Event 4101 "Display driver igfxn stopped - Microsoft Community
Definitely a buyer beware and you’ll see from the patch notes on the Intel site just how many fixes and how many known issues there are.
Maybe I’m just unlucky, but for now I’m having to use my old Surface Pro 6 with Intel 620 HD.