Who is the main rival to each ISL team?

Hi everyone.

So I got into ISL last year and love it and I am a English Kerela Blasters fan 💛 so I know our main rivalry is with Bengaluru FC and Chennaiyin are more like a secondary rival like how Tottenham views West Ham etc and I know there is a rivalry with MBSG but not as big as Bengaluru.

So my question is this what is the main rival to each ISL team? So I know the obvious ones like with MBSG it's East Bengal FC and same for East Bengal but what about the other teams? Like am I right to assume chennaiyin main rival is Bengaluru especially since they already have rivalry from IPL.

Thank you to anyone who replies.