There’s so many brands and types of NA sparkling drinks out there. Those brands are great ones (love a Black Cherry Waterloo), but I’d also recommend things like Spindrift, which is sparkling water with a little bit of fruit juice.
If you aren’t from America, your best bet is to go to the grocery store and walk around the aisles with soda or juice. You’ll find a ton of interesting drinks there. Most alcohol will be in a different (and clearly marked) part of the store.
I mean, isn’t that the point?