Unless they are specifically labelled as "altum angels" (and they'll have a crazy price tag to match), all angelfish in the aquarium trade are MOSTLY scalare. It's likely that they're technically a hybrid of mostly-scalare with a trace of altum.
Get whatever kind you like. Do some research, as some kinds are less sturdy than others. For example my redhead kois have been worry-free, while my panda kois have the albino gene which tends to make fish weak and I've had lots of problems with constipation and bloat in this pair.