I see UBQ and SIGT coins in the Balance area (under Options) but anyone have working blockchain explorer API URLs for these two since these are not pre-filled in Awesome Miner like they are repopulated for ETH, ZEC, and others?
All coins are unfortunately not supported, because Awesome Miner requires a Block Explorer that provides an API in order to get this kind of information. If I'm able to find one, I can of course add support for more coins. A large number of coins are supported via this Block Explorer, but not those you list:
https://chainz.cryptoid.info/