The thought that orange doesn’t rhyme with any word is false. There is even the word sporange or the hill Blorenge which makesl a near-perfect rhyme with orange. Lot’s of other imperfect rhymes as well. It’s not even about it being a single word as you can see. It is a hard word to rhyme with, but it’s possible. What the word orange is, is a word that has no perfect rhymes. It also has no easy non-perfect rhymes, none that I can think of right now anyways. But there’s a considerably sized list of that:
https://en.wikipedia.org/wiki/List_of_English_words_without_rhymes#Words_with_obscure_perfect_rhymes