You can do it all at once.
If you’d like certain ones there asap then text a friend or business (knowing it’ll be a landline) a couple times with all the emoji you’d like. Tap them a few times if necessary. It usually works in 2 texts for me. Text the grocery store. No one cares and it won’t go through anyway. I think you need 30 different emoji to clear the list. I just add food and cars when I run out of my favorites.
