So to save anyone the trouble I compiled a list of monitors with HDCP2.2 and, to save people who are trying to find out whether a certain model has HDCP 2.2 time, a list of monitors without HDCP 2.2. If the monitor you're researching is on that second list you can stop looking now. I'm assuming that any monitor that has HDMI 1.4 hasn't got HDCP 2.2, so any monitor with HDMI 1.4 goes on that second list, as well as monitors with no HDMI. Even if you could get a monitor with HDMI 1.4 and HDCP you wouldn't be able to play back UHD at 60fps anyway.
The list is correct, as far as I know, when I wrote it but new monitors are coming out all the time and it's possible that I missed a monitor all together. Let me know in the comments if there's a UHD monitor with HDMI 2.0 and HDCP 2.2 and I'll add it to my list for future readers.
Monitors confirmed with HDCP2.2
Asus PA328Q (HDMI port 1 only)
ASUS ROG Swift PG27AQ
NEC MultiSync PA322UHD
Seiki Pro SM40UNP
Unconfirmed monitors are ones that were hard to find specs for. Truthfully I just gave up because I suspect that none of them have HDCP 2.2.