Personally, I skip what I can't be certain of. I've not heard of those that you mention. I'm curious as to what type of product you're finding them in. I learned the painful way that just because something is vegan, it in no way means it's healthy for my body. My venture into choosing vegan consumption began with major health issues, so I try to stay on top of that scene as much as humanly possible.
That's why I prepare and consume mostly whole food plant-based rather than highly processed store bought. I cook and prep in bulk to have stuff on hand, prepare finger foods that I can toss in a small cooler and take with me wherever I may roam, and always keep clean water and/or my favorite herbal infusions with me to sip on when I can't eat. Luckily, I have the time to do all of that on a regular basis and have always loved to cook. Some days I like to take a break from all that food prep and purchase the quicker options or go out to eat, but I try to be sure to add a big salad or plenty of steamed greens to my highly processed choices to help things move along within.
My body feels the difference and lets me know via various symptoms when I start eating too much of what doesn't genuinely nurture cell-ph. It continues to be a learning experience, albeit a much tastier, less stressful, and less painful one now that I have 4ish years of ongoing trials and tribulations. Try not to stress too much over each and every thing as that kind of internal pressure can be equally as detrimental to your health.
"Strange times are these in which we live when old and young are taught falsehoods in school. And the person that dares to tell the truth is called at once a lunatic and a fool." ~Plato