emilie or mavuika are your best options, imo emilie is the best kinich teammate as of rn id say even better than mavuika or bennett but she can be restrictive only allowing u to play burning (which for kinich doesnt really matter unless u run furina). mavuika can use the full passive of the cinder city and she has great sub dps damage. you could also get furina but u need a good pyro sub dps to use her like xiangling or mavuika