I am a huge root beer fan. Our family does a periodic (read, every 6 months to a year whenever the mood strikes us) root beer taste testing, and I am always looking for a new brew. This one was one of our favorites with a fun name, and I think you can still get it online. Lots of "gournmet" root beers are here today gone tomorrow kind of things. It isn't like a traditional A&W root beer, which is kind of the base idea of what a root beer is, this one has more spice and heavier notes of anise/licorice with a stronger after-taste, although it was plenty sweet, creamy, with a decent frothy head.
There is a web site from a guy that I am reasonably certain went to BYU and he reviews root beer. He and I have different tastes, but I feel I am more into the true sassafrass flavors (or sarsaparilla) which tend to carry with them bitter notes like licorice which I love and he hates, but his site is still a good place to start if you want to try some different kinds of root beer.
https://www.gourmetrootbeer.com/reviews.html
One root beer this guy and I agree on is Henry Wienhards root beer, which is one of my favorites.
https://www.amazon.com/Henry-Weinhards-Root-Beer-dinirao/dp/B000WG851I
Funny it gets bad reviews on amazon because they use high fructose corn syrup, like you know 90% of the sodas out there. Still tastes great. Some would even argue that the corn syrup helps with the creaminess.
I travel quite a bit with work so I am always on the lookout for local root beers. Lately it has become a thing for micro-breweries to produce their own home-brewed root beer (non-alcoholic of course) and some of those are interesting, but are then harder to find online so I can order some for a family taste test. I even found a small local brewery in Berlin that had a version of root beer. It was pretty strong and tasted more like beer than root beer, but it was still pretty good.
I could go on about this topic, so I will just stop there.