You’re asking for more froggy features, but I feel like the Incurseans and the Galvans have those traits split down the middle.
The incurseans are already green, have the sticky tongue, the webbed hands, and do the chest-puff thing.
The Galvans are a much lighter green, and have the frog eyes, gills, and small size.
Both of them have the ability to stick to walls, and the giant mouths.
I’m not sure exactly what you’re asking for except for Attea to have the sort of lumpy head that the AF era grunt soldiers had, soldiers who are explicitly unhealthy damaged clones, which Attea is not.