I see I’ve been beaten to the bunch, but I did find another XW – Xavier Wahlberg, son of Donnie of New Kids on the Block fame.
To start the Y section, I give you singer Yolanda Adams.
Does this count?
Balian Buschbaum nee Yvonne Buschbaum German Transgender Polevaulter
Yvette Bing, wife to the mayor of Detroit and former Piston Dave Bing.
Yvan Cournoyer, famed Montreal Canadiens hockey player.
Yves Duteil, French singer
Yves Edwards Mixed Martial Arts fighter
Yakov Frenkel, Soviet physicist.
Yvette Gonzalez-Nacer - actress
Yuri Ivanov, Soccer pro
Kind of the Barack Obama of Greece – trailblazing black politician who shoots some hoops on occasion.
Yolanda King, daughter of MLK, Jr., and Corletta Scott King.
Yuri Lowenthal - with 200+ IMBD credits, he must be some sort of celebrity.
Yo-Yo Ma
Yannick Noah, tennis player
Yoko Ono
Backing up a bit to strengthen YB…
Or, to be a little more recent, Yasmine Bleeth.
But getting back on track: Yolanda Perez
Yoelbi Quesada, Cuban triple jumper and 1996 Olympic bronze medalist
Yves Rocher, cosmetics tycoon