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All wallets supporting BTG can be found in their official website.
Sure

.
The one from their official site was recently compromised (among other things wrong with BTG).
Which one?
I imagine that you are talking about the web wallet that were storing private keys/seeds? Because that one wasn't created by anyone from the BTG dev team.
No, I'm talking about the one they have this giant warning for on their site:

Except things have changed since my one week hiatus from here, that's not a web wallet.
There is/was, you're just going to have to be willing to say "bye bye" to your BTC's during use.
Why?
See above.