Vegan alternative to Mozzarella
Late but you have to try the vegan Mozzarella from Miyoko's kitchen. Its the only Vegan Mozz I've found that tastes great cold i.e. in a caprese sandwich but it also melts very well as I use it on pizza all the time. It may be sold locally in your area I would use their retail location finder. 

https://shop.miyokoskitchen.com/products/fresh-buffalo-style-mozzarella-cheese?variant=5781995395