Off the top of my head, that can be found between $100-$270 based on sales if you look hard enough (ie about the amount you'd have to wait for the K7XX to be on drop at any particular point): AKG K141, K701, K702, K712, K612, Q701; Sennheiser HD558, HD598, HD580, HD600; Phillips L2, X1, X2; HiFiMan HE400, HE400s, HE400i; SoundMAGIC HP200; Beyerdynamic DT440, DT990, DT990Pro, DT880; Samson SR850; Grado SR125e, SR225e, SR325e; Telefunken Aqusta; Ultrasone HFI 2400; Sony MDRMA900; German Maestro GMP 435, GM240; AudioTechnica AD500X, AD700X, AD900X, R70X; Shure SRH1440; Alessandro MS1e, MS2e; Roland RHA-30. So, 38, and I am probably forgetting a handful.
none of that is to say that the K7XX aren't great headphones, simply that the competition in the $100-300 open back market is intense with very high quality performers, which leads to a lot of "flavor of the month." It's the same with low end closed designs. There's literally hundreds of mediocre $100 closed headphones. But the high end closed headphone market is pretty barren, especially if you take anything costing more than $600 off the table. Heck, I think the THX00 best almost all the $600+ closed headphones. It destroys the Audeze EL8, for example.