You're probably referring to chess titles. In the USCF, there are Senior Master, National Master, Expert, and Class A to J, ordered from strongest to weakest. In FIDE, there are Grandmaster, International Master, Fide Master, and Candidate Master. Then there are Women Grandmaster, Women International Master, etc.
I guess World Champion is technically a title as well.
please tell me, how are chess players ranked? begginer, amateur,.......