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
LG 27MU67-B
Asus PA328Q (HDMI port 1 only)
Dell UP3216Q
Samsung UE590D
Samsung U32E850R
ASUS ROG Swift PG27AQ
Asus PB287Q
IIyama B2888UHSU
Acer 4K2K
Acer B326HK
Eizo EV3237
Philips BDM4065UC
Dell P2415Q
Dell P2715Q
Dell UP3214Q
Dell UP2715K
Acer XB280HK
Samsung U32D970Q
LG 31MU97
Viewsonic VP2780-4K
Unconfirmed
Acer S277HK
Acer CB280HK
Acer B286HKgvu
Acer K242HQ
AOC U2870VQE
AOC U2868PQU
NEC MultiSync PA322UHD
Seiki Pro SM40UNP
Seiki 40U4SEP-G02
Samsung LU32D97KQSR
Philips 288P6LJEB
Viewsonic VP2780-4K
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.