In case you're genuinely asking: sadly, no

First hint would be that ratking stories are from Europe, before westerners went to the US.

Rat Kings basically stem from rat nests with too little space. When rats got hurt and in rare cases managed to entangle their tails, while they healed and fused together

Rats are super social, so they will help their nest mates by bringing hurt rats food, which people mistook for the rats serving "a king"

The only thing that makes it somewhat less sad is, that is likely that all sightings are made up and it never actually happened