I can check my Charles de Mills, but I'm fairly certain it has thorns. It does have a gorgeous deep rich colored flower that looks sliced off.
Cardinal de Richelieu is very very very very purple. The most purple rose I've ever seen. I have a deep dark purplish red rose that somebody thought was Cardinal de Richelieu and sent me a cutting. It turned out to be Orphaline de Julliet.
Belle de Crecy has also been mistaken for Cardinel de Richelieu.
I have all of these if you want to compare during bloom time. That is, if we have a normal bloom during this very very strange year.