Fonts not showing in Word for Mac

I'm about to pull my hair out. As a teacher I often use many different fonts in activities I do. Recently I noticed a good chunk of my downloaded fonts had suddenly disappeared from my font list in Word, however they still appear in the list in Pages. If I type out the name in Word I'm able to use the fonts, but they still don't show in the list of fonts which is frustrating. I have quite a few hundred fonts installed. The other weird thing is the ones that are missing seem to be M-Z in the alphabet. From M-Z all that is showing up in the list in Word are fonts that are standard, and a small handful (maybe 5-10) of user installed ones. The majority are missing. These fonts were previously always on my list. I have some documents that used these fonts and now when I open those documents the fonts don't show up unless I go to the font bar and type in the names (which is frustrating trying to remember all the different names exactly!)

I have tried deleting the cache file for Word (multiple times), when it repopulates it's still the same. I have tried completely deleting a couple of the font files and reinstalling them - same thing happens. I've spent days on end reading through questions trying to find the same problems but anything that has worked for anything that sounds similar has not worked for me so far.

It's Word for Mac 2011. My computer is running Sierra version 10.12.

REALLY hoping somebody out there will have some good info and be able to figure this out before I drive myself crazy!