Last of the Texture Rebalances leaves 9 Champs without one, what gives Riot!?
We're talking just about every champion and skin released before 2013 (with a few outliers)
said in this announcement thread: http://boards.pbe.leagueoflegends.com/en/c/general-pbe-feedback/jEQYuEHl-coming-soon-mass-texture-rebalancing

TIL "a few outliers" equals 9 Champions
There are many champs released in 2013 but of the ones that still need Texture work, there are 10 left.
Full list of Champs by release date here: http://leagueoflegends.wikia.com/wiki/List_of_champions