Good shouts, but I'd replace 2013 El Reno with 2014 Pilger, which produced FOUR consecutive (and simultaneous!) violent tornadoes, every single one of which likely reached EF5 intensity. I'd also add 4/11/65's Storm L, which produced 6 violent tornadoes including (IIRC) 2 F5-intensity tornadoes along its 270 mile path. Also there was a cell in KY/IN/OH on 4/3/74 that produced like 5 violent tornadoes (including an F5 or 2). Maybe New Richmond (produced an F3, two consecutive F5s and another F3 along with a fifth significant tornado according to Loco's reanalysis IIRC) counts, too.
EDIT: Also adding Grand Island 1980 (AAAAAAAAA), Bowdle 2010 (remember those chasers getting stuck in the mud? That was because they were fleeing like 3 separate tornadoes at once), Atlantic-Tionesta-Tidioute 1985 and Yazoo City 2010. And the Minneapolis tornadoes of 1965 if those were the same cell as well.