Jaunpur is my favorite Indian nation for a tolerant muslim game. Get economic and humanist ideas, keep the dhimmi strong and happy, and you can conquer everything without rebels or converting, run at -20% tech cost (-piety muslim / happy dhimmi) and easily spawn all institutions in your OP farmland cotton/silk/dye provinces to often embrace institutions ahead of Europeans.
Korea is also amazing fun, has the option of converting to Manchu and eventually forming Qing.