I have taken a 6 am flight out of Lga four times in the last week or so, in all cases the tsa pre line has been huge and the touchless line empty, I think United is the only other airline in b that supports touchless so it turns out to be very useful, not so much over at the dl terminal where scads more people are eligible.
I had a tough travel summer with the weather so ended up switching between dl and aa a few times, I notice that once you check in on one airline you do not get in when you check in on the second.