Rosario also got darker skin and didn’t get fanart and unfortunately we know how fandoms are ☠️ (although when we see what kind of crimes he will do it’s totally normal that he didn’t get some lovey dovey fanart or whatever, compared to Adonis or Merka who are more deserving)
but even Shyloh himself didn’t get fanart so as you said it’s probably a coincidence. Both guys got fans too and since the fandom is super small for now there’s only a handful of fanarts, if we count all the characters. I think when the fandom grows, we will see more fanart of all characters. Feeling kinda hopeful
Good luck for your fanarts