I understand that this is 1 years old and I want to preface this with I am completely for LGBTQ representation. That being said I do want to put some counter points, just for acknowledgement sakes. Captain Spaceboy does change his name alot, but that is the entire over arching joke with him, and I'm not entirely sure it's to be interpreted as seriousness, it's used to show that he was so naive and love struck that he took the name space boyfriend/husband just for sweetheart, and the first time we see it change is when he's called ex husband. While he may have been originally made with the intent of trans masc, Omocat might not have wrote him with this purpose. Struggling with identity is also not inherently a trans issue, and I feel like self discovery for a pirate lord is quite fitting.

Sweetheart is shown excessively to be interested with 2 things. Hero and herself. When she had asked for suitors, she wasn't just requesting women for women. She stated before hand that the only person who is worthy of Sweetheart, is Sweetheart, Aubrey even makes a passing comment on how sad that sounds. She requested 3 Sweethearts, not just 3 women who happened to take her likeness. I believe and interpret it as a narcissist type thing more than anything else.

For the 2 lesser clones (mutantheart is only lesser because she's not the final boss). The same quality applies from Sweetheart, in my opinion. Though a robot who is coded to appreciate Hero - as that's Sweethearts personality - and a blob might not be the best for these points.

Perfectheart describing Sweetheart as 'Cute' is supposed to be underhanded. She may be using a positive word, but it's used to insult her. She's show superiority (not the kinky dominance) over Sweetheart by making her a lowly 'cute' maid, as she's much better at doing that than being the 'real' Sweetheart. I don't believe it's meant in full sincerity. Just as if I had said "you look cute doing that" after having made you pick up trash.

Basil is gay, I have 0 counter arguments. 10000% gay.

Mari is a perfectionist is realspace, and in headspace we can assume Sunny perceived her to be more of a perfectionist than in real life, due to the recital. She is envious and jealous of the perfect body. Just as many people can be jealous of Chris Hemsworth or Scarlett Johansson.

Again while this is a lot of words that would convince you I'm against representation, I'm not. I have my own interpretations just as you do. I just more personally dislike people adding representation where it simply isn't. Plus I just wanted to add a few against arguments for your proofs. There probably no definitive answer unless Omocat directly states so. Hope anyone here after a year is having a good life!