Which edition?

I love lego games and this is one of the few I have yet to play. I know it’s not like the traditional Tt games but it still looks like a lot of fun to me. That brings me to my question, what am I missing out on if I don’t get the awesome rivals edition? I am a collector at heart and if there’s any exclusive content i’ll NEVER be able to get unless I buy that edition, i’ll feel empty if I buy another 😭 So I guess what I’m asking is: are the extra content packs from the $120 version exclusive, or can they be obtained in game by another method?