For Aquilamimus, I like the additions of 100% distraction for it’s group distraction and having swap in distraction. But I think it has too much HP (3000 would be fine), and the dodge on Evasive Rampage probably shouldn’t apply to the whole group. Ovilophosaurus may also be fine with less HP (especially if it’s getting sidestep and more damage).
For Argentinosaurus, I don’t think it needs as much attention as the others. I like having a group Impact instead of a strike. But the new strike seems unnecessary, just keeping Resilient Strike or even Superiority Strike would be fine.
I’m not sure what Parasaurolophus Lux needs to be honest. The group healing strike is an interesting idea though, but I’m not sure if it would be too strong or too weak. Again, I’m not sure changing the basic strike is neccesary. The ability to cleanse your entire team with group cleansing strike is important for a group healer, but having a group cleansing attack that also slows and bypasses dodge may be too much. Maybe it could get Tuoramolochs group superiority, since that move only cleanses distraction for your team.