Sorry yes, I'm in the UK and lentils/beans commonly come pre-cooked in 400g cans which usually equates to around 240g drained weight. E.g. https://www.tesco.com/groceries/en-GB/products/262490576

Soy beans pre-cooked in cans don't exist in the UK.

thanks.

I don't know if you have checked out black gram, aka urad dal or urid dal. It is used with rice in the batter for idli and dosa in a 1:3 ratio.

high in protein.

https://en.m.wikipedia.org/wiki/Vigna_mungo