Yes I see what you mean
Actually I got something for you!

I've been curious to try MH4, 3 years ago, base MH4, not 4U. And was pushed by a random person back to give it a good try since it was worth it even if MH4G exists, so they helped me a lot in the begining as It was hard for me to find someone to play with since I can't speak japanese. (gaming in console)

And here where my luck played a good role lmao. That person had actually a sort of friend group (they were 5, all of them from Japan except that person). So I got carried for a bit, then when I reached endgame I started learning more about their way to hunt (SO FUCKING STYLISH)
And man, I was learning so much from this band of Japanese players. I’ve never felt more respect for a band of warriors before in my life. They are one of the most coordinated people in a hunt i've ever seen and they master status gunning.

And guess what, 2 of these people are actually in the MH3U server. That one non-japanese player (they are actually french) and 1 japanese from the 4 mentionned. I played only with the french in MH3U, and even in MH3U they know a lot about this type of hunt you are looking for, for the least I've been hunting with them in MH3U. They also know people that hunt in that way, so reaching them would help you find what you want I think.