Number 1 would of course be guillaume. Felix is second in line and will remain so as long as his brother is childless. His daughter and new son after. Noah and Gabriel are not in line for the throne. Their father gave up his place in succession when he wed, and though his father did grant Tessy and the boys titles later, the boys are excluded. Amalia and her brother are the only heirs of the next generation so far. And will only be displaced when Guillaume and Stephanie hopefully have kids.
Congratulations to the couple and Amalia on the new addition. And to the whole family. I can't wait to hear the name.