I don't know them all which is why I wrote etc.
I couldn't find it but if this has been asked before please post alink and I will hide this question and follow the link.
They are tiers. Here's my source and more about them.
They are tiers, they basically classify Pokemon. Uber is the most strongest to OU to UU to RU to NU to PU to NFE to LC. There are also some other tiers like Cap, hackmons, and glitchmons.
Source and Knowledge and dont forget This
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The points system
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