Jainism is the only example of an 'ism' that I have found on Earth that deeply resonates with me, yes - though I don't know a lot about it yet.
I think fruitarianism is a good choice, though we might be best served by also bringing in other plants too. Many plants die each year whether we eat them or not - so it seems a little short sighted to remove them from our diet because they don't produce fruit