The problem is, you've develop a bias based on false assumptions. Forget everything you think you know about wushu... Many of the best martial artists out there also train contemporary wushu and many famous traditional masters were wushu coaches. Most older athletes are good at both. You can't really tell who's "real" or not until you look past the forms. Someone who's 100% contemporary now days will focus entirely on forms competition and nandu (the new difficulty focused scoring system). Some contemporary forms work perfectly fine as traditional forms (like 24 taiji quan, and the beginning/intermediate longfist training forms) and some actually ARE traditional forms used for forms competition
A general outline of a real traditional wushu program (just one example):
You'll have stationary and line exercises to condition and strengthen the body (a combination of individual techniques from the system, and separate exercises to develop strength and flexibility).
Body conditioning for giving and receiving strikes (bag work, partner conditioning exercises, etc.)
Martial and health qigong (internal development)
Application training (Sparring, and usually two person drills/forms... sometimes other application drills focusing on specific skills like sticky hands or push hands).
And application should always consist ti (kick), da (strike), shui (throw), and na (lock). So basically both striking and grappling. There might be some kind of sport fighting training (like san da) which is great for learning and perfecting basic striking, throwing, timing, and so on. But there will probably also be present techniques you can't use in sport (like clawing and illegal grappling moves, for example) that you'd also learn at some point.
Of course this is a very general and simplified explanation. There's always going to be variety in Chinese martial arts. If you look at the meat of their training system, that'll weed out a lot of sub-par schools. If you just worry about modern vs. traditional, and what lineage it's from without having a trained eye, you might over look something over silly political reasons or join up with a sub-par traditional school (someplace with authentic lineage... but that's lost something along the way). The lineage aspect is kind of tricky with Wudang because there's a lot of legend and tall tales involved no matter how far back you go. Not to mention, many older generation wudang masters are just flat out unknown to most people. It's something that'd be tough to research without already knowing an old timer from the area, and knowing Chinese. From what I've seen of the wudang guys, they look very fast and strong, and I know there's at least some wudang lineage there through a now deceased friend of my last teacher's (a style called Wudang Wuxing Taiyi Quan... Wudang 5 element great spirit boxing? sorry, my Chinese is still pretty minimal

).