Since 1980, here's the list of homegrown wing players that have won NBA Finals MVP - i.e. they won finals MVP on the same team they were drafted by.
Kawhi Leonard
LeBron James (after returning to Cleveland)
Kobe Bryant
Paul Pierce
Dwayne Wade
Michael Jordan
Joe Dumars
James Worthy
Larry Bird
Jaylen Brown.
That is why I never took the JB and JT era for granted. Watching them develop over the years into stars, and the finally breaking through to win it all, was one of the most enjoyable parts of being a C's fan. It is difficult to draft and develop a star, much less into one that helps secure a championship. Ask all of the other fans and teams around the league about that.
Off the top of my head, favorite things about the past two decades or so:
1) 2008 - banner 17
2) 2024 - banner 18
3) Years of watching JB and JT develop into elite players
4) Isaiah Thomas' "King in the 4th" season