The short version is I think there are too many factions showing on the Rank/Division HOF in diamond.
I talked with TestpedroDev to make sure I was understanding the latest update that was made with respect to the number of factions that are in diamond. he confirmed I was understanding things correctly.
The new change has made it so the number of factions in Diamond is capped at 180 as a theoretical maximum. However, his graph makes it clear that while the old total was 180 (45 per division), the new total would be less than that with -26, -14, -13, -7 respectively to the 4 divisions. There are currently 176 factions in Diamond.
I can't confirm my supposition just yet because I am not certain which wars ended before vs. after this change went live. but I suspect this is related to a broader problem with the HOF ranking readout. I posted this bug which was marked confirmed several weeks ago that showed factions were moving around in Diamond according to the old metric of who beats whom.
https://www.torn.com/forums.php#/p=threads&f=19&t=16597748&b=0&a=0&start=0&to=27829004
Mentions: Faction RW HoF ranking