Has anyone worked out what the most common star signs are for bastards?

For the record I don’t believe astrology is “real” or whatever but I do think it’s a bit o harmless fun & listening to an episode as Robert gave their birthday I was like “huh he’s a gemini” & then wondered…what is the most bastardy zodiac sign according to the show 🤔 would it be an even spread or lean towards some signs more than others i wonder! Should I run the numbers?