What we are mining depends on the very current situation in altcoins market. We also used to mine LTC very rarely and we had 160% LTC profitability when there were other more profitable coins, but there are not many such coins today, so ~50% of our hashpower goes to LTC today. But then there comes a day like previous Tuesday when there's some profitable coin and users who were at CleverMining had four days of tremendous earnings. We just catch every opportunity there is, but there needs to be one available.

There is no such thing as “currently mined coin”. Most of the time we split our hashrate between several coins, as most of coins are too small to handle all our hashpower.

Finally, the reason for not showing list of mined coins is very simple. We don't want to advertise when we add a new coin. If we're the only major pool mining such coin and others follow after 24-48h, then we're able to earn more during this time. If other big pools would follow immediately, coin difficulty would increase faster and we wouldn't be able to earn that much and the period of this coin good profitability would be shorter. Not showing list of coins is simply for your best interest.