Since I used Popplio in Moon, I suppose I might try with Rowlet next in. However, if hidden abilities are going to be a thing for the starters, I'd lean more towards Litten or maybe even Popplio again lol.
I started with rowlet and level grinded it to Durstrix even before I got to the first kahuna. So I think I will use popplio this time around.
In Sun I chose Popplio then I restarted and picked Litten. So this time around I'll more than likely pick Rowlet.
In Moon I took Rowlet mostly because of Decidueye's Ghost type, however I now like Primarina more so I'll take Popplio.
I think I've finally settled on the decision of going with Rowlet this time. I'm still upset that its evolved form is Grass/Ghost instead of Grass/Flying though.