It’s been a while since I played Robots, and my brain’s a bit fuzzy on the details.
Robots is Eiji/Elly, Raj is from WUT. Also they’re not actually set to your orientation. You pick whether you get Eiji or Elly right at the start when you get a phonecall. If you pick the phone-call from Josh then the game defaults to Elly.
The only character that is is Silas/Tammy, who’s set to be the opposite of your gender (so only a straight romance option).
Josh is technically MC-sexual, however he read as heterosexual to me, with a few last minute code-tweaks to the game to make him romanceable by men. Which may be a bit unfair of me, but none of the other characters read that way to me.
I did make a previous post about it though.
With Juliet it’s mentioned that you’re both female. The other characters (apart from Silas and his counterpart) read as bi to me.