Moved from Viceroy.

Here's the description from Northern Prairie. All of yours certainly seem to have all the spines in the Viceroy description. Northern Prairie
Red-spotted Purple -- Green or brown bird-dropping mimic with white abdominal saddle and long, black spinulose horns on second thoracic segment. Top of head with 2 small spinulose knobs. Second abdominal segment with prominent subdorsal swellings. Last thoracic segment humped; seventh and eighth abdominal segments as well but to lesser degree.
Viceroy (L. archippus) similar but with pair of spine clusters atop thoracic and abdominal humps, conspicuous "ankle bracelets" of pale spines above each proleg, and more spinulose overall.