Question: what are ranks of priesthood?
Answer: Pope (Bishop of Rome) Main article: Pope. ... 
Patriarchs. The heads of some autonomous (in Latin, sui iuris) particular Churches consisting of several local Churches (dioceses) have the title of Patriarch. ... 
Major archbishops. ... 
Cardinals. ... 
Primates. ... 
Metropolitan bishops. ... 
Archbishops. ... 
Diocesan bishops.