I just bought the Monster Manual and the Dungeon Masters Guide. I noticed that Monsters are organized by CR and locations but not by type. Is there any resource that lists Monsters by type so I can make encounters that contain all aberrations, all fey, all beasts, all undead etc.? I would like to avoid cataloging all the monsters by hand.
This is my favorite spreadsheet: https://rpggeek.com/filepage/108409/bestiary
It lists every published monster to date, has around 20 columns of information about each one and has wonderful sorting features built in. It is updated within a week or two of each book being published.
Google "D&D 5E MM spreadsheet" and you should find plenty of options.
I have an Excel spreadsheet with name, type, page, CR. I don't know where I got it, but it may have been at this reddit. Those four columns are all it lists, so I hope it doesn't trample IP to link it.
Within the first five Google hits I found three resources that satisfy your request.