I've noticed that a lot of US organizations love to use "levels", but coming from the outside it's borderline impossible to know what those levels mean. We have

I've noticed that a lot of US organizations love to use "levels", but coming from the outside it's borderline impossible to know what those levels mean. We have IC levels, and I'm sure I'm on some level, but have zero clue as to what the level may be or mean. In cases like this where you just have payment guidelines for a level 52, you might as well not know. What's level 52? Is that an intern or senior management?