Notwithstanding that I voted to close, I'm going to stick my neck out and say there are no "English nouns with suppletive plurals". With the possible exception of person/people per Wiktionary link.
But I would point out that both those are singular words in their own right, with regular plurals (persons/peoples). It just so happens that people is often used as a plural anyway (similar to one fish, two fish).
It's also worth noting that person can be used in contexts where people can't - for example, "He carries a pistol on his person", but not *"They carry pistols on their people". Correspondingly, "The good people of London welcome all to the Olympics", but not *"The good persons of London..."
Valid examples of suppletion in English consist of a few common verbs (to be - am, is, were, are) and adjectives (good - better, best). The phenomenon can only occur with common words, because with uncommon words the natural tendency of speakers to "regularise" inflections will triumph.