But they all look like kickboxers. That NYsanda page has a lot of kickboxing & MMA but the techniques are not similar to CLF at all.
...
So the question is if these guys are really doing CLF or Sanda/sanshou/MMA?
Well, boxing today has changed radically from the bareknuckle boxing of the 1890s. Muay Thai has become more dynamic than its Muay Boran predecessors. Judo took a lot from Catch and vise versa after their battles in the 1920s. Even Machida and his ilk are bouncier and dodgier than the early 1900s flat-footed karatekas.
It is unclear WHEN BJJ is going to stop evolving.
Likewise, Kung Fu is going through the same evolution... people are taking the art and modernizing it. Stances are higher, punches go in combos and not in some rhythmic pattern, there is no ridiculously risky techniques like catching a fist with a hand that resembles a snake, or crouching like a crane and flipping someone... but when I watch some of those clips, I do see CLF. Looping punches, palm strikes, throws from the hip, wide uppercuts, dashing kicks etc. etc.
So yes, CLF in the 1880s and CLF now look mighty different. But that is the evolution of martial arts. That is why I'd never train in some place that says "LEARN THE KOGA STYLE SECRET DEATH TECHNIQUES OF THE 1400s" or "LEARN THE CHINESE FLYING DRAGON STYLE OF THE 1700s!" because, well, those arts are too old, were specialized for combat at the time, and don't serve as much of a purpose for self defense or ring combat today. If an art can modernize itself, then it's a good art.
Also, remember that Sanda/Sanshou isn't a fighting style... and I'm going to pretext this with the fact that I may be wrong (and have been wrong about Sanshou before on SHerodg) and I need someone to back me up on this... but Sanda is pretty much a sport that the Chinese government made so that styles of Kung Fu could compete with one another, and unify in a certain way.
Sanda is pretty much just the rule system that several styles of Kung Fu (and any martial art) have to follow to compete in Sanda-style tournaments.
However, you need to realize that there are very few pure 'Sanda' schools and that Sanda and traditional chinese martial arts go hand in hand.
So, the way I think of Sanda is that it is a base which resembles western boxing, and it is augmented by the techniques and the style of Kung Fu you are using. So you are learning Sanshou and Wushu at the same time and you blend them, or you learn Sanshou and CLF at the same time and you blend them, or you learn Sanshou and Hung Gar at the same time and you blend them.
This may change, but (and I'm expecting to be corrected) this is how it is right now.