These days most of the coins that launch are all ICOs or some type of ETH token. Very rarely is a new POW coin released these days. These aren't the days of 2014 where everyday there was some type of Scrypt algo coin released and you can instamine it and then dump it 24 hours later when it got listed on Poloniex (top exchange back in 2014)

So basically ETH is currently the most profitable especially for GPUs, there really isn't any secret coin out there. Times are much tougher now for miners than they were a few years back. Too much saturation in the markets unfortuntaely and not much profit left to be made.