It's the Carli Performance 2.5 System for 2019+ Rams.
I have a '21 Rebel Eco-Diesel and Carli recently confirmed that their standard kit plays nicely across all the 5th Gen Ram models. The only caveat is that during their testing phase they found that Rebels tend to sit ever so slightly lower in the rear than non-Rebels. They're finishing up a new rear coil that's 1" longer to remedy this but it's not ready yet and they don't have a part number for it.
And just like that, the 2019+ 1500 Platform is a wrap! It seems like forever ago the process started but we've finally come to a close. What felt like 100 different combinations of coilovers, reservoir hoses, front & rear springs, and reservoir mounting combinations culminated into the beautiful...
carlisuspension.com
I ordered my kit through Powerhouse Performance (So Cal) and they're doing the install as well ... they do tons of Carli builds ... Super cool guys too.
FYI - as of earlier today Carli had 4 of these kits available and I got one of them.