Trader Joe’s vegan products

Do Trader Joe’s vegan products require a hechsher to be considered kosher? For example, the Trader Joe’s vegan Korean Beef less Bulgogi does not have a hechsher but it’s packaging and online description doesnt list any obvious non kosher ingredients...

Sushi

Can one get sushi or sashimi with kosher fish such as tuna or salmon from a sushi restaurant that also makes sushi or sashimi with non-kosher seafood? If yes, are there special specific instructions to give?

Cheeses without a hechsher

Please disregard my previous posts regarding this question as I did further research on this issue on this site which resolved my question. Thank you so much, Rabbi Abadi, for this website and all your guidance on HaLacha!