Bear in mind rice milk will be a small amount of rice and a lot of water, ditto soya milk and oat milk. Soya milk has been proven to use less greenhouse gas than dairy milk so it’s strange you’d go back to dairy milk.
www.google.co.uk/amp/s/theconversation.com/amp/soy-versus-dairy-whats-the-footprint-of-milk-8498
“Cornell University scientist, David Pimentel, has found it takes about 14 kilo-calories (kcal) of fossil-fuel energy to produce 1kcal of milk protein using conventional milk production. Organically produced milk might require a little less than 10kcal of fossil-fuel energy per kcal.
In comparison, Pimentel’s data suggests that in a conventional soybean production system, one kcal of fossil energy invested produces about 3.2kcal of soybean. For 1kcal of fossil energy invested in organic soybean production, you get an average of 3.8kcal of soybeans. This means it takes between .26 and .31kcal of fossil fuel to make 1kcal of soybeans (contrasted with 10-14kcal to make 1kcal of dairy milk protein).
Pimentel states that soy protein accounts for about 35% of those kilocalories, so it appears that making soy protein is more energy-efficient than dairy protein”
“A 2010 “current and possible futures” study into greenhouse gas emissions across the top 45 food commodities in the UK recommended dairy milk and products be replaced by soy-based milk products.
A recent Dutch study comparing the water footprints of soybean and equivalent animal products found that soy milk and the soy burger have much smaller water footprints than cow milk and the average beef burger. The water footprint of the soy milk products analysed in this study was 28% of the water footprint of the global average cow milk. The water footprint of the soy burger examined was 7% of the water footprint of the average beef burger in the world.
Another important environmental parameter to consider is how much phosphorus is used to produce food. Modern agriculture is dependent on phosphorus derived from phosphate rock. It’s a non-renewable resource, and current global reserves may be depleted in 50 to 100 years. Meat and livestock production are associated with high phosphorus use and a vegetarian diet demands significantly less phosphate fertilizer than a meat-based diet.”
Australian article but European/ UK stats.