After syncing my iPhone playlists do not show up on my Mac. Now what?

iPhone playlists not showing on Mac after syncing.

I created several new Playlists on my iPhone yesterday and sync'd to my Mac Mini today. The new Playlists do not show up in the Finder window lists where the syncing/updating takes place.

The old ones are there including two Smart Playlists.

Seven, in total, are missing out of twenty-seven.

I've already tried

• turning the iPhone off and restarting it
• then on my Mac turning the Music app off
• then syncing,

but the new Playlists do not show up.

I checked things like the: Artists, Albums, Genres and those boxes checked are fine and the music in my iPhone has updated.

iPhone Music App Playlist Screenshot:

Mac Playlists Screenshot showing "Gym Workout," "Opera &" are missing from the Mac:

I do not use a music subscription: this is all music I own.

The Mac Mini and the iPhone both run up-to-date software.

iPhone 12 Pro Max.

Mac Mini purchased this year.

(I've been an Apple user since the 80's.) This is painful.