Windows 9x

If you're finding real versions of Windows 9x, then it's on Wikipedia 

Windows 9x - Windows family that version name worked on year release algorithm (1900+x). There are unlimited versions of Windows 9x, but real is Windows 95, 96, 98. Most used versions are 97, 99, 100, 101.

First whole Windows 9x History introduced on WNR 4, and first separate Windows 9x history introduced on WNR 39 as a Windows 95.

Has most commonly used at WNR 95-125, 140, 145, 160, 190, 195-200, 215, 220, 225, 230, 235, 240, 616, 666.