The ones in question are not rotkeil, IMO. The rows of black spots are not usually seen in rotkeil juvies. Also, rotkeils usually have bright orange or red anal and pelvic fins, while yours are dark red/maroon. These look more like some of the efasciatus on the market.
Keep in kind that common names like “green severum” don’t necessarily mean the fish will be green. They’ll range from tan, brown, green, gray, to blue. That’s what leads to a lot of confusion. I see a lot of people, for instance, who say “well I have a turquoise severum (H. appendiculatus) because it’s blue, not green.” The problem is that not all appendiculatus appear turquoise-colored, and not all turquoise-colored Heros are appendiculatus...