When I first became interested in becoming vegan, I looked into protein supplements. The ones I first looked into were not soy-based. Even back then I got a lot of my protein from soy milk and tofu and thought it best to have more variety. But most of the ones I tried tasted petty awful. I still remember actually throwing out a cannister of rice-based protein powder cause it literally ruined the taste of my morning smoothies.
as I became more knowledgable I determined that (for me) a supplement wasn't just necessary. There were better tasting whole foods I could add to my smoothie. Peanut butter is my usual but I have also used oatmeal and tofu.
I think my main issue with protein powders is that they use isolates and concentrates and there is no evidence that those are as good as the real things. Plus they tend to have lots of additives.
My first suggestion to you is to use CronOmeter to calculate your protein intake. Cronometer is pretty good at figuring out your protein requirements - they are probably less than you think. If you are not hitting the targets almost all the time than I would recommend you add more protein-rich foods to your diet. Like tofu, black beans, lentils, peas, oatmeal. I am also a fan of using soymilk to supplement protein.
now I'm older and seniors need a little more protein. Plus I've gotten into a bad habit of occasionally skipping meals. So I do have a container of protein powder in the cabinet that I occasionally use as sort of a meal replacement.
Right now I have a container of Molly Stone's (its a local upscale grocery store chain) Organic Vegan Protein Powder. Rice, hemp, chia, mushrooms. 21 grams per scoop but I never use a full scoop. It's pretty close to tasteless. but it does add some chalkiness to the smoothie. That is one of the reasons I just use a half scoop.
If you don't have a Molly Stones anywhere near you then you might want to try Orgain Organic Plant-Based Protein Powder which you can order form Amazon.
Also, wait a few days for all the replies to come in. There are some other members who know more about this than I do.