So, how about b2x? Which wallet is the best to claim free b2x? I'm not so sure right now.
That's completely irrelevant... B2x got "cancelled", so there is nothing to claim... 
Just a technicality here, but it doesn't matter whether it got "cancelled." The forking client was in the wild; there are still btc1 nodes online as we speak. The reason that the fork didn't occur is that the btc1 client broke. All btc1 nodes apparently got stuck at height #494,782 - 2 blocks before the fork was supposed to happen. I'm not sure that a block would have been mined once the fork occurred anyway, given the high difficulty and lack of user/service support.
I actually got "YOB2X" tokens credited to my account at 1:1 to my BTC on Yobit. I'm assuming this is due to B2X. People are buying it at 0.03-0.04 BTC for some bizarre reason.
Okay I'll byte.
How do I get my free Yob2x?
I don't think you can. As far as I know, there is no segwit2x chain because segwit2x failed to activate. Even if it was cancelled, some people were still going to mine it, which would result on a split, but the software failed, now some guy here says that garzik fixed it.
My question is: Is anyone mining segwit2x? and is any exchange listing the actual coin post-split? (I yhink YOB2X are just futures, so you would have needed to be holding the coins on yobit to get these tokens).