Yasper was never on my radar either but when they explain the clues, I missed them all.
I was suspecting Chelseathe first few episodes cause of way she acted and in one story I saw her swap glasses on table when 2 people weren’t looking and it wasn’t noticed or mentioned.
Then I was kinda on the Walt/zoe train also.
As far as season 2, those tiers are gone for now so I can’t do the next season till those return, but the 2nd season is continuing with Zoe and Aniq and a new murder. This season I correctly guessed killer like 2 or 3 episodes or something before end and then I kept watching that person confirming my suspicions. We’ll see how you do when that gets watched