I would suggest to use one's network to find these answers. An informational interview with current/former employees is the perfect place to ask these questions

I would suggest to use one's network to find these answers. An informational interview with current/former employees is the perfect place to ask these questions without making anyone uncomfortable. I wouldn't rely specifically on company anecdotes found from a Google search or anonymous GlassDoor reviews. But taken together with some informational interviews, one could get a good picture. It's also good job-hunting practice to make as exhaustive a list of questions that you mentioned -- "culture" means many things, and different things to different people.