I've worked for several different companies and several different teams since "Agile" was developed. What I can say is "Agile" doesn't exist: I haven't even seen two teams within the same company doing Agile the same way and referring to the same thing when they say they're doing "Agile."

All "Agile" means at this time is you're not likely to be doing Waterfall, though I'm an old fart and remember Waterfall and I can tell you there are teams saying they're "Agile" and they're actually doing Waterfall. "Agile" is a meaningless word.