Jim, do you have a link to information revealing Romana Patanaude isn't female? I know there was speculation that this was an early pen name for Ramona Fradon, the co-creator of DC's Metamorpho.
I've been able to verify that Cecilia Munson also used the name Munson Paddock but I can't find any information that suggests she was a he.
For Futura's first appearance, I have to agree with theories I've seen that Chester Martin is the most likely artist. Clearly he didn't stay with the character as the art varies fairly strongly through the series.
Yoc, I meant I can repost my commentary from Golden Dames on the forums here if you would like. So you can read it easier.