Well, I was tempted to call IBM and ask them to squeeze a Z-series mainframe into a 22mm form for you, but its Sunday night, and I figured nobody would be there to take the call.
So I went looking for some links to feed you because you have entered a realm that I never have. And what I think on these would just be based on what is written in these reviews, and not from experience.
I like the comments this site made in a 5 workstation laptop roundup... The HP seems to have been their favorite for a lot of reasons.
http/www.techradar.com/us/news/mobile-computing/best-mobile-workstation-5-ideal-laptops-for-business-1271480
Anandtech has some of the same models covered here..
http/www.anandtech.com/tag/mobile-workstation
This site did a 10 way workstation laptop roundup...
http/www.notebookcheck.net/Notebookcheck-s-Top-10-Workstation-Notebooks.65537.0.html
And finally, PC Magazine also did a business laptop roundup earlier this month...
http
/www.pcmag.com/article2/0,2817,2362039,00.asp