When the pandemic first hit I bought shelf stable non-dairy items from Amazon and this was one of them. Amazon had labeled it as a creamer, and it is indeed creamy but not quite the weight of half and half:
A favorite of professional baristas and coffee lovers everywhere, Oat Barista Blend takes plant-based lattes to the next level. This remarkable plant milk has enough structure and stretch to whip up frothy, full-bodied lattes with no dairy, gums, or gluten. Naturally creamy and subtly sweet, it...
www.califiafarms.com
You have to shake it up very well and then it pours in a nice froth. Previously I'd used almond or soy milk, but it wasn't creamy enough for coffee. This company also makes a coconut cream and almond milk product called Better Half, but I haven't tried it. I'm sticking with this oatmilk product and am going to see if it's available at my local food store today in fact.
Update: my local store carries a refrigerated bottle of Califia Oak Milk Creamer. I'll try it when I run out of the shelf stable carton kind.