I think (maybe) part of the reason Joe has/had sussed out the Traitors is because he’d never met any/very few of any of the players before the show so had no pre-conceived ideas about any/few of them, unlike most of the other players had about each other.
I initially wanted David to do well for the same reason as Doodledog but tbh, he hasn’t contributed much to my enjoyment up to now, he’s just been a bit too quiet for me but I realise that could be due to editing.
My other favourites even before the start were Mark and Celia. I was very disappointed when Mark left, I loved his enthusiasm for the game.
Celia was a joy throughout, just so much fun to watch.
Although I’ve enjoyed watching Joe and Nick, I want Alan and Cat to win. Cat because she has just been so true to the game/good at being a Traitor (I wonder if her Autism/and or ADHD has been a factor in this in any way?) and Alan, who was never someone that I cared for/watched before Traitors, but has provided me with so much entertainment, especially during the first two episodes.