Helldivers 2

I'm loving the new stealth capabilities, but the whole thing is extremely vibesy. The rules of thumb are just stuff like "don't touch patrols unless you can quickly wipe all of their human-sized bots at once" and "run away and let a patrol/bot drop despawn". I get that it's a game and we're supposed to just feel it out, but some things are quite counterintuitive, like how popping a mine or a rocket strider's side rocket doesn't raise alertness any more than quietly popping a bot head. I'm finding no answers for any of the following.

1. What is the detect range of a bot if you're standing still in the plain open and they walk up to you? How about crouched/prone? With or without various armors?
2. How does moving affect the above?
3. What is a bot's cone of vision?
4. Do all bots have the same visual detect range/cone?
5. Does visual cover actually do anything? Are all pieces of cover the same (i.e. does a wall block as well as a tree or vice versa)?
6. What about partial cover? Is having only your head or weapon exposed as good full cover or as bad as no cover?
7. Does being obscured by brush/vegetation do anything? If so, does being in the brush work as well as being behind it?
8. How close can you get to a bot outside their vision crouched/prone with or without various armors?
9. Do all bots have the same hearing range?
10. Does moving through brush make more sound?
11. What are the bot states of alertness and how do they work? What is the cooldown for making suppressed fire noises without truly alerting anything, and is that affected by range from the listener and/or the target?
12. Do patrol bots alert static bots?
13. How far away do you need to be to despawn something? How long does it take?
14. How far away is the safe distance to make a ton of noise, like quasar-ing a fab?

There's a ton more I'm not thinking of, I'm sure. I'm not really equipped to start on this kind of science, or I'd consider it. Not expecting any real answers, but I'm just throwing this out there in case anyone has heard of anyone doing it or if you have thought about it yourself.