I don't know for images, but for characters you go to their page, and where you see the Info box at the top, you can click on the number next to favorites and it'll show you who faved that character ^^
If this is already a feature let me know, but I couldn’t find it anywhere ;;
I’d suggest implementing s feature in which, even after you’ve deleted the notification (if you have it on in the first place), you can go to a character or image and see WHO has favorited it.
For me personally it would allow me to more easily find artists with similar interests as me, and just enable me to interact with people who like my characters.