The Economist on plant-based milk Although nuts themselves are high in protein, nut milks are not; the next best bet protein-wise is pea milk, though this can be relatively difficult to find.
Should becomer easier soon, if Merit delivers.
https://www.economist.com/the-economist-explains/2021/11/05/which-type-of-plant-based-milk-is-best (paywall-free alternative https://archive.md/iJ89b)