I'm surprised the crouching airdash combo isn't on the list yet.
against crouchers
5B 2B 5D j9.4C IAD j.A j.C
Works with 5A or 2A starter as well. If you have a good starter, you can do 5B 2B 5D j9.4C IAD j.4C delay j.C 5A j.A j.B j.4C dj.4C j.C to extend it, but that's like with a 5B starter or jumpin starter.
Would like to also add since you end with j.C you can obviously special cancel it late into a nail of some sort on the way down. (like OTG people with a C nail)