Who initiated the alignment of peninsular powers against the Company in the 1770s?

During the late 1770s, a grand anti-British confederacy or alliance was forged among the primary peninsular powers—comprising the Marathas, Hyder Ali of Mysore, and the Nizam of Hyderabad—to combat the expansionist policies of the British East India Company. The Marathas (specifically Nana Phadnavis) played a pivotal role in initiating and structuring this alignment during the First Anglo-Maratha War.