Ford lots seem to be the last to fill up. Anecdotal, but GM and Mopar lots around here are bulging with inventory.
$9k off MSRP for Jeep Gladiator diesel is pretty easy to find.
I looked at a ZR2 Colorado for $6k off MSRP just the other day.
Haven’t seen gladiator eco diesel discounts anywhere close to that but have seen 22 1500 eco diesels for $12-13k off. Crew cab, 2wd, Laramie models.