Apple books not displaying correct cover art on iPhone, shows correct on MacBook pro.

Keep all my audiobooks on MacBook pro, keep a smaller number that I'm listening to now on iPhone 17. Cover art shows correctly on MacBook Pro but when syncing new audiobooks via Finder on to iPhone, the cover art is not correct for the book playing or is even from a music album. When re-do the sync, get a different cover art than what was seen before. Had same problem on prior iOS as well (now on 26). The audiobooks that were already on iPhone that were transferred directly from iPhone 15 now show correctly.

Suggestions?