Unless you have a reason to use something specific (like lactose intolerance or CMPA), then I would switch to whatever milk you tend to use as a family. Basically, whatever you do, I would be consistent, and you'll go through a lot of milk in the next few years, so it should be something you can easily buy in wherever you normally shop and can afford to go through a lot of. I wouldn't avoid cow's milk just for the sake of it personally, unless you have a reason to or you don't drink it in your house anyway. We fed dairy of all sorts from 6 months, including yogurt, all kinds of cheeses (didn't avoid any - cheddar, cream cheese, stilton, brie, goat's cheese, etc.). We never had any issues with switching to cow's milk at 12 months. If you choose to use almond milk or coconut milk or another non-dairy type milk though, just make sure to get the pure, unsweetened kind, as a lot of the big commercial brands contain added sugar.