Snivy WILL be the grass starter in Legends Z-A!

We all agree that Snivy will likely be the grass starter in legends Z-A, but it seems to be backed up by professor Sycamore who has several portraits of Unova Pokemon in his lab like Tepig Snivy and Servine oddly enough though he doesn't have an oshawott painting, despite there being depictions of Snivy and Servine there isn't a Serperior, what are the odds

It obviously wasn't intentional but is a very cool fact to have