As an almost-dairy-free convert, I've only really tried a few soya milks and a little bit of oat milk. From memory, oat milk does taste great in coffee but it seemed a little watery, and required too much to get the same effect/taste difference. Having poo-pooed soya milk for some time, I finally converted full time after realising that the unsweetened stuff is more palatable in tea and coffee than the sweetened.
IANADietician, etc. but I do try to read up on what's being consumed. I'm not convinced by the article above; criticising a product for being a combination of fat, sugar and water, when actually the quantities of the "bad stuff" really aren't that high, or much different from the product it's supposed to be replacing, seems a bit disingenuous. Besides, is rapeseed oil really that bad? It's the main oil I use for cooking precisely cos I thought it had a good nutritional profile as far as fats go??
In fact, if you wanted to make a case against oat milk from a vegan nutrition perspective, IMO it falls down on protein content: only 1%, compared to >3% in either cow's milk or soya milk.
TL;DR: I reckon unsweetened soya milk is a good shout in terms of both taste and nutrition...
edit... assuming it's got your added calcium and B and D vitamins. :)