The real x-factor here is that most of the God Fruits that we've seen haven't really had much ties to their actual element. Luffy's powers aren't heat or light based like you'd expect for a Sun God, he's stretchy and uses his "imagination" to create things.
So...I'll just bring this up...do you notice that Zaza has 4 arms?
Kind of reminds me of...Robin.
Could ROBIN'S Fruit actually secretly be the Rain God Fruit?
I mean, we did see Robin go into a Demonic form with Demonio back in Wano. And, as we've just learned, there isn't that big of a difference between a God and a Devil, in this world. The Hana-Hana Fruit SEEMS like it'd tie more into plants, and be a candidate for a secret Forest God Fruit, but maybe Oda's giving us a twist here. It'd be weird, but not impossible.
Zaza's also wearing a Japanese-style kasa hat. Which...is technically a STRAW hat. And the style makes it seem like the original Zaza likely had some connection to Wano back in the day. Also, Zaza's limbs are made of water. So, this is the first "Devil Fruit-like" power that we've seen that's able to directly control water. So...just more things to keep in mind I guess. Although this is a "Nightmare" version of Zaza, so it likely doesn't totally reflect reality, like we saw with Nightmare-Nika.
We already know that Loki has the War God's Fruit.
Personally, I'm still halfway expecting Imu to have a God Fruit, even though that could just be the Akuma Fruit as we've been told with no new twists And it'd make sense for Dragon and Blackbeard to have God Fruits, too.
Characters like Garling, or even Law and Kid, aren't entirely out of the realm of possibility, either. And Brook could be something else, too.
The number of potential gods is certainly going up, I'll say that! I'm still mulling over some of this new information, so we'll see what shakes out.