Browsing the CBR forum I found Nightcrawler ranked as the luckiest x-man, as in the most fortunate to fall into good circumstances:
‘The X-Men are easily the toughest superhero team to be a member of, even with the prosperity of the mutant nation of Krakoa. However, there are some X-Men who have always been lucky. While their compatriots struggle with circumstances, they are always catching breaks that others don't. Their lives as X-Men have been much better than their fellow members.’
‘Among the X-Men's strongest fighters, Nightcrawler has always been special. He'll take on all comers with a smile, his acrobatic fighting style perfectly complimented by his mutant skills. It's easy to believe that Nightcrawler isn't lucky; his mutation gave him demonic looks that made him a target. However, his luck quickly changed when he joined the X-Men.
Nightcrawler was able to find a family of people of who would love and accept him. This allowed him to reach his potential as a person and hero. Nightcrawler wouldn't call it luck, as he's a religious man, but he knows that a lot of his successes came from something besides his skills.’
https://www.cbr.com/marvel-lucky-xmen-ranked/
I don’t think he’s the luckiest x-man….but he may well be one of the luckiest visible mutants.