Nobody on the team really stands out. The top options:
Kirk - Has been pretty good, but Raleigh is clearly ahead and then Dingler and Narvaez are ahead both in WAR and the sexy stats that usually get you into an all star game. Tough sell to get a slap-hitting defensive wizard with 3 dingers into an ASG
Clement - Basically same boat as Kirk. Behind Ramirez at 3B, Bregman if he's healthy, probably Paredes. Has more fWAR than any other 2B, so maybe he sneaks in on that basis?
Bassitt - Maybe the team's MVP so far? But there's a clear group of 5 or so aces ahead of him, and he's part of a secondary group of like 10-15 SPs all having comparable seasons.
Gausman - see: Bassitt
Vlad - Probably gets the nod. Doesn't really stand out from Torkelson, Goldschmidt, Aranda, or O'Hearn but has the reputation and still has a month to pull away from the others.
I think Brendon Little has excelled the most in his role relative to his peers on other teams.