Before mostly yobit has always new coins but since the supports is not really active in yobit i think much better to stay away from them
You can try other site like
https://www.cryptopia.co.nz/ This one also good alternative. and for big exchanges cex.io and bittrex..
like the above said if you really wanted to get new coins coinmarket is a good place to see all new ico and you can check them one by one to check where are market are allowed to trade with those new ICO. .
That's actually the trade-off you have to contend with if you want to trade on the slew of new alts and tokens that enter the market daily. As the majority of them do not have the necessary funds to get listed on the majors (from my understanding recently it can cost you USD 50,000 just to get a six-month listing on the big ones) nor the documentation necessary for due diligence and verification (to get "verified" status on WAVES dex for example).
I just took a look at yobit's twitter and they still seem very active, as they have been for a long while and this is one of the exchanges that lists so-called exotic alts. The same goes for cryptopia. One is Russian, the other Kiwi. They're both notoriously slow with support on these exotics, though, with infrequent wallet updates and withdrawals.
I daresay they're actually just as competent (and I mean to say this generously) as the more recognised platforms when it comes to Bitcoin, so I would look to liquidate all coins into Bitcoin when withdrawing. This is basically the only reason I still use them. Whenever I happen to get a lot of exotics, I just sell them off on these exchanges. Bitcoin withdrawals seem fine.
All at your own risk of course!