https://support.apple.com/en-gb/HT201749 (Updated 29 October 2018).Legacy suitcase TrueType fonts and PostScript Type 1 LWFN fonts might work but aren't recommended.
Apple confirmed to me only a few years ago that Type 1 fonts were still supported, when I asked, so I'm surprised there wasn't more of an announcement, given their history on the Mac platform. But certainly the writing was on the wall, given their use of the now abandoned 'Resource Fork'.
Of all the music notation software, only Finale still offers Type 1s, of course. It's well past time that MM just offered OTF format versions of all their fonts (or even as part of the move to SMuFL that was planned in 2015 and 'leaked' in 2017.)