The exchange you mention its not really a good option for doing an IEO because of the exchange not really popular. To be honest, if you want participant an IEO better-used top ran 1-3 exchange you will have a chance get a good fomo on their IEO. For other exchange will not guarantee you because the trading volume of the token/coin will be low because the exchange was not really popular.
how can you say the exchange of bittrex and kucoin is not popular? they are quite large exchanges and were popular before the arrival of binance