I must say I'm more interested about which team finishes 3rd in the WCC than which driver finishes 3rd in the WDC. Maybe because I'm more of a team fan than a driver fan.
Anyway, the race for WCC P3 seems now like that:
P3: Ferrari 106pts
P4: Williams 103pts
P5: Force India 91pts
P6: McLaren 90pts
Red Bull on P2 seems to be too far ahead, a solid rest of the season should be enough for them to keep the P2 unless some team behind them find an exceptional form.
I think Williams is a big threat to Ferrari here. Ferrari is more consistent but Williams seems more capable for having some superb races. If Williams can avoid some strategic errors, they should have what it takes to surpass Ferrari in the standings. Force India might also be more dangeorus than Ferrari on suitable tracks but I doubt they can surpass the more consistent Ferrari. And I don't see McLaren getting to P3 as they haven't been too good after Australia.
After the good results in recent races, my pick is Williams, even though Montreal and RB Ring were tracks almost made for Williams. I expect usual midfield teams Williams and FI having a bigger push for WCC P3 money than usual frontrunners Ferrari and Macca who shouldn't be struggling with their budget because of one or two bad seasons.