Microsoft Office fonts in /Library/Fonts/Microsoft (ahhh I see).system fonts in /System/Library/Fonts (never ever touch these).
I researched dozens of websites each adding a piece to the puzzle. I now know more about fonts that I ever wanted to know especially how Microsoft fonts fit into the Mac picture. One customer had issues with a critical branding font that installs fine on everyone else’s Macbook but not theirs. When things go wrong – they can sometimes really go wrong.
Macs are not perfect even though one’s productivity is much higher with one.