Ummmmm I bought straight from mao recently and he sent me lossless files of his songs, and he labels the artist as "mao". Maybe Maonyoro is like, Gravity, has that stupid FULL VOLTAGE TONOSHI SOMESOMETHING GRAVITY, but they're still labeled Gravity. Something like a moniker?

maonyoro? maonyaro?

According to "まおにゃろ", romajis should be "Maonyaro".

https://twitter.com/maonyoro/ is he maonyoro...?

Yes, the name is まおにょろ which is Maonyoro, as confirmed by twitter/email/etc. I may have put the wrong hiragana when creating the page. Correcting it to Maonyoro now.