This is three different whites, all available in silk floss on minis. 6 stranded 25 yards, OR single stranded 150 yards OR super fine 300 yards.
B5200 is the bright white, about DMC B5200
5201 is a soft white, about a DMC Blanc
5202 is still almost white, but going toward cream. About DMC 3865
From left to right:
5202, 5201, B5200