The 3-3-5 is a wrinkle...not a base defense...but certainly can come in handy at key times.
It really depends on how you perceive where the game is going. 30 fronts used to be really popular, but the four-man look took over in the 70s with press coverage, and maintained popularity into the 90s because of the success of the 86 Bears with their "46 Defense."'
But 30 fronts were still popular during that time. The Giants showed a 30 front, but it was a 30 hybrid because LT often rushed out of the 9 technique. Later on during the 80s the Chiefs did the same thing with Derrick Thomas. I would consider Bill Cowher as the 30 front disciple of the 90s, but he really laid the ground work for more than just a 3-4 because of all the complicated zone blitzing they implemented ... and I would say it's really in the Fritz Schurmur line of "Big Nickel" or "30 Flex" looks because they really took away the middle of the field that West Coast offense teams needed to make the short passing game work.
Defenses have become so complex with defensive ends behaving more like outside linebackers, linebackers behaving more like big safeties, and safeties being asked to do just about everything. The complexity is at a point where I don't think you can really look at a defense these days and define them by their front. One-gap defensive tackles are glorified nose guards these days, and three-gap defensive tackles are expected to get to the quarterback like defensive ends. These days, 40 fronts can be morphed into 30 concepts by personnel application, and 30 fronts can be morphed into multiple looks for the same reason. A 40 front can become an old-school 50 front by shifting strong or weak, but it's more of a scheme to combat a two-back system, so you don't see that as much as the pro level where one-back looks rule.
So ... to say a 3-3-5 is just a wrinkle ... it's hard to say what's base and what's not anymore.
The only thing that's really out-dated as a base defense is the Bears 46 and the Texas Nickel, both of which demand sending numbers with press coverage. They started to become passe' on Dec. 5, 1985, when the Dolphins and Marino showed how to torture the scheme: pepper the heart of the defense with the tight end and then throw to a spot to the receivers downfield. Basically, punish a defense that dares to break Cover 2 principles.