DND 5e Solo Melee?

Hello, I have a hopefully simple question.

My GM was going to be running a solo DND 5e game with me, but I need help with picking a class. The game was going to be a smaller one-shot style adventure, serving as a background for my character to join a larger group of other players. Issue is, I can't decide on which class I should go for.

The plot itself is simple; break into a small thug hideout and neutralize said thugs however possible. I was planning on running a melee character, as it's what I enjoy, but the problem is the other players. The rest of the party already has a Life Cleric, a Battlemaster/Eldritch Knight Fighter, a Swords Bard, and a Berserker Barbarian. Basically, I don't really know which other classes are good for melee without coming across as superfluous.

Out of the other classes I had in mind, I was admittedly thinking either Monk, Paladin, or even a melee-specced Ranger, but I'm not quite sure. Can anyone suggest anything?