The latest update on LooksRare web came along with a handy new addition for NFT collectors. On the collection page, you can find a new dropdown on the left side inside the "Collection" collapse. There you can sort a list of collections that you own by a number of tokens, 24h volume or alphabetically.
Selecting a collection from the list will show all tokens that belong to it.
Have you switched to LooksRare yet? 🤔