“You can see I love Luminar. It works really well. Well, it's what I recommend to a lot of people who don't want to pay monthly fees.”
“Uh if you've watched this channel for a while, you'll know that I'm a big fan of a couple of the tools in Luminar. Most notably, the mystical tool.”
4 more creators cited with it, listed below.
Creators who use this also use

Luminar Neo
also used by 2 of them

Mango Street Lightroom Presets (Film Emulation Collection)
also used by 1 of them

Motion 4
also used by 1 of them

Orb
also used by 1 of them

Photo Mechanic
also used by 1 of them
Photoshop (beta) Relight feature
also used by 1 of them