Installed Font not appearing in Pages or Numbers

I never install new fonts via Font Book. Have you shut your iMac down, and then booted into Safe Boot mode? That will clear system caches, and rebuild some system databases, including the Font database. Then reboot normally.

I drop new fonts into my /Users/yourname/Library/Fonts folder. This is one of the primary filesystem locations that is searched by the operating system and I have never failed to install a font there and not have it immediately available to Pages with any new or existing document. It must be a font that is compatible with the operating system.

Your version of Sonoma is 1.5 years behind the current Sonoma 14.8.3. Either update that, or if you want newer versions of Pages available to you, then upgrade to macOS Sequoia 15.7.3. Apple is expected to introduce their new Creator Suite today (01/28/2026) and Pages, Numbers, and Keynote will then require macOS Sequoia or later to obtain them from the Mac App Store.

Quarterm00n wrote: I have correctly installed a font (Hitmo2.0) into my Font Book, but it will not appear in the list of fonts in Pages or Numbers.

Do you see that font when you go to Format > Font > Show Fonts > All Fonts? Sometimes fonts will be available there but not in the usual app font list.