HP's mobile workstation ZBook Studio G7 is very slim and competes with devices like the Dell Precision 5550 and Lenovo ThinkPad P1. The GPU performance is very good thanks to Nvidia's Quadro RTX GPUs and you can get a very bright 4K DreamColor display.
https://www.notebookcheck.net/The-HP-ZBook-Studio-offers-plenty-of-GPU-performance-and-a-very-bright-DreamColor-display.529013.0.html