Yep I mean its interesting and makes me curious. I kinda would like to understand why jurons evolved that way. Presuming that all are like Rin. Kani seems straight forward biologically. Ashe well tongue. Cea -shrugs-.
I'm not an evolutionary biologist so I'm not exactly qualified to explain how or why something evolved the way it did, even in a fiction universe there's only so much I can BS it.
However, most Jurion are similar to Rin. There are extremely rare genetic variants that are not intersex, or not able to share memories. How those people are treated though is something we're going to really get in to at some point in Season 2. It's in the planning stages and I may try to figure out more on the science of it.
Fair to say that Kani is pretty human, tail, ears, and tongue being obvious differences. And while the dick is differently shaped, Palon males are also pretty human. So yeah, taste aside they are very 'simple'. *shrugs* Catpeople, not much to say there.
Cea and the Dovin are... well, I don't want to get into that because we'll be getting into that in detail in Episode 8 (depending on the path you're on). She is one of the more popular characters, then again most of the non-human characters are pretty popular. Though the human females all have their fans too, guys not as much but I still have monthly commissions for Adam and Michael. No one cares for Armin it seems, even Bojin has had commission requests