Total list of differences/confirmations found in my 7586-1
White 92950 x 2 not 3455 x 2
Trans light blue 60581 x 1 not 4215b x 1
Orange 4532 x 2 not 4532a x 2
Trans neon orange 6126b x 1 not 6126 x 1
White 60581 x 1 not 4215b x 1
Bright pink 4589b x 1 not 4589 x 1
Trans orange 4589b x 5 not 4589 x 5
White 3684c x 2 not 3684a x 2
3626c x 1 not 3626b x 1 ( already discussed )
3626c x 2, 3626b x 2 not 3626b x 4 ( already discussed )
Also found what is already listed as alternative :
Light blue grey 4599b x 1
White 60032 x 1
Found :
White 44728 x 1 is the 92411/21712 version
Undetermined item
2453 x 4, mine are 2453a x 4
Hope this is of use, even if it is just to be noted.
Beside the heads there is at least one listed above that doesn't fit existing
listed usage dates.