Pre-30 Normal Matchmaking is Weird
First off, this is NOT me complaining about matchmaking at all. I understand that normal MMR is separate from ranked MMR and all that bullshit. All I am doing is talking about my last game on my second account, which had some interesting matchmaking.
So I just got out of a game on my other account, which is currently level 27, where I was playing Taric support. My ADC was a Caitlyn who had a platinum border. My mid laner was a diamond Ahri. Jungle was a plat Warwick, and top was a gold Darius. Not sure about the enemy team's ratings, but it was pretty interesting how my team was.