retired numbers by team (through the 49 posts so far):
yankees - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 20, 21, 23, 32, 37, 42, 44, 46, 49, 51
giants - 3, 4, 11, 20, 22, 24, 25, 27, 30, 36, 42
pirates - 1, 4, 8, 9, 11, 20, 21, 33, 40, 42, 44
guardians - 3, 5, 14, 18, 19, 20, 21, 25, 42, 455
red sox - 1, 4, 6, 8, 9, 14, 26, 27, 34, 42, 45
phillies - 1, 14, 15, 20, 32, 34, 36, 42
cardinals - 1, 2, 6, 9, 10, 14, 17, 20, 23, 24, 42, 45, 85
reds - 1, 5, 8, 10, 11, 13, 14, 18, 20, 24, 42
braves - 3, 6, 10, 21, 25, 31, 35, 41, 42, 44, 47
astros - 5, 7, 24, 25, 32, 33, 34, 40, 42, 49
mets - 14, 16, 17, 18, 24, 31, 36, 37, 41, 42
orioles - 4, 5, 8, 20, 22, 33, 42
dodgers - 1, 2, 4, 14, 19, 20, 24, 32, 34, 39, 42, 53
twins - 3, 6, 7, 10, 14, 28, 34, 36, 42
white sox - 2, 3, 4, 9, 11, 14, 16, 19, 35, 42, 56, 72
brewers - 1, 4, 19, 34, 42, 44
tigers - 1, 2, 3, 5, 6, 10, 11, 16, 23, 42, 47
cubs - 10, 14, 23, 26, 31, 42
royals - 5, 10, 20, 42
padres - 6, 19, 31, 35, 42, 51
athletics - 9, 24, 27, 34, 42. 43
angels - 11, 26, 30, 42, 50
expos - 8, 10, 30, 42
rangers - 7, 10, 26, 34, 42
major league baseball - 42
rays - 12, 42, 66
diamondbacks - 20, 42, 51
blue jays - 32, 42
rockies - 17, 33, 42
mariners - 11, 24, 42
nationals - 11, 42
marlins - 42
retired number frequency:
8 - retired by 6 teams (retired by yankees for two players)
10 - retired by 10 teams (retired by expos for two players)
14 - retired by 10 teams (retired by mets and dodgers for same person)
18 - retired by 3 teams (includes mets who will formally retire the number in 2024)
20 - retired by 11 teams (retired by orioles, reds, and guardians for same person)
24 - retired by 8 teams (retired by giants and mets for same person)
29 - retired by 4 teams (retired by twins and angels for same person)
31 - retired by 4 teams (retired by cubs and braves for same person; retired by cubs for two players)
34 - retired by 8 teams (retired by astros and rangers for same person; retired by brewers and a's for same person; retired by a's for two players)
37 - retired by 2 teams (retired by mets and yankees for same person)
42 - retired by 30 teams (retired by cardinals and yankees for individuals in addition to jackie robinson)
44 - retired by 4 teams (retired by brewers and braves for same person)
56 - retired by 1 team
running total of unique hall of famers (including those without numbers): 161
running total of non-hall of famers: 59