Not a constitutional post, but a record 26 deputy CMs across 7 states

A record 26 deputy chief ministers are in office across seven states at present- a position for which there is no constitutional provision and has emerged as a political tool to placate allies and keep the flock together.Though deputy CMs take oath as ministers, they hold a higher status in the pecking order.

source https://timesofindia.indiatimes.com/india/record-26-deputy-cms-across-7-states-a-political-tool-or-reflection-of-diversity/articleshow/107271444.cms