After a couple months, and as of version 2.0.2
This is the general consensus:
Fox ~ Wolf > Falco
Often, I see Falco being used in tournaments, and placed in the high tier area from early tier lists by high to top level players. The consensus is that Falco is definitely not the smash4 joke he used to be. Ffarman would be able to go into detail more better than me, I won't tag him because you can go to the Falco board / discord group, and read up on what he's already written. Bottom line, Falco is somewhere around high tier.
These two usually are placed in the top tier for most tier lists. More often I see Fox above Wolf, sometimes Wolf is above Fox. I don't think the difference is big anyways. They both have different advantages: Fox is a glass cannon, and therefore more volatile to play as than Wolf, but has better out of shield options and speed. Wolf has a more reliable projectile and more consistent survivability than Fox.
In regards to all spacies, I honestly don't think you can go wrong playing any of them in this game. High tiers can still make it far in tournament, I mean the fact that we saw Nairo playing Ganondorf (widely considered top of mid-tier as of today and to be as good or maybe better than he was in Melee) to great success proves how varied the cast is in this game.