Which Haikyuu Teams Are True Permanent Powerhouses

In Haikyuu, during the training camp arc, Tsukishima refers to Nekoma and even Fukurodani as “occasional powerhouses.” That got me thinking: which schools in the series would you consider true long-term or permanent powerhouses, and which ones are more generation-dependent teams that become strong only in certain years? How would you rank the schools in terms of consistent powerhouse status?