You forgot the ADVANCED BEGINNER category, commonly used here by new members asking advice for cabon OFF²+++++ blades.
Yeah. Another thing worth understanding is how people's brains work. There are certain people who tend to overrate themselves. There are other people who tend to underrate themselves. I have noticed in TT that players at lower levels are far more likely to overrate themselves. I have also noticed in TT that higher level players seem more likely to underrate themselves.
And since everyone has a different definition of beginner, intermediate and advanced. I know a lot of players who cannot loop backspin on one wing or both who consider themselves advanced players. I would consider that a beginner. I don't think there is anything wrong with being in the beginner category, or, as IVegita has described "advanced beginner".
I would actually, in general consider most players below about 1800-1900 level (USATT rating) to be in the beginner or advanced beginner category. The lines are a little blurry because you can have one player whose fundamentals are excellent and whose games skills are not great who has a USATT rating of 1500 even though, the fundamental skills are much higher. You can also have someone who is has a USATT rating of 2100 whose fundamentals are so bad that you would not realize how good the player is.
So, the lines are not 100% distinct when a person crosses over to being an intermediate level player. But I would say Intermediate level players are often somewhere within the 1900-2300 level.
At about 2300 level it is very hard to be bad and still play at that level. You sort of have to do everything quite well. At that level it is also much less likely that funny tactic anomalies will break down that player's technique. It is also at that level where, playing someone who is much higher level will also not break down the technique of the player, even if they are getting beaten badly. Whereas, below that level, frequently, when a player is faced by stuff they have not trained against sufficiently, their technique will break down as they make more and more mistakes.
Here is more of what I am talking about in video form.
See if you can rate the players in these videos:
One of the videos has ratings listed. I was hoping to find ones without. But it will still make the point.
Can you rate any of the other players?