Heyo, what Windows laptops are you providing these days? I'm possibly going to jump ship and it's about time to get a new laptop.
I use a Dell XPS 15 with a Dell TB16 dock but I'm not sure I would recommend this configuration to everyone: The machine and dock are very picky about what kernel I run, and I can't get the combo working correctly with suspend/resume on Ubuntu 18.04 (sticking with 17.10+kernel 4.15.18 for now). WiFi also needs to be manually reconnected every hour or so.
Lenovo X1 Carbon
Dell XPS 13 (inc. the developer edition which ships with Linux)
HP Elitebook 840