Bartho is not like all those you mentioned.
As for your "would do anything to achieve his goals, a characteristic shared with every Mugiwara". Further Explain upon this argument please.
He is actually quite ruthless. So he is similar to most of those I've mentioned.
Luffy would risk his life to become Pirate King
Zoro would risk his life to become the WSS
Nami would risk her life to draw a map of the World
Sanji would risk his life to find the All Blue
Chopper would risk his life to create an All-Curing Medicine
Robin would risk her life to learn the True History
Franky would risk his life to ride his "Dream Ship"
Brook would risk his life to meet Laboon once more
They've always fought to the death for the good of the crew, always with their own goals in mind. Bartolomeo is probably the same considering his massive fangirling fits, already mentioning he "would risk his life" to find Luffy in the Colosseum for Zoro
Funny how only antagonists were on your list.
Bege isn't an antagonist, Crocodile is debatable, Lucci is debatable, Caesar is debatable. Former antagonists, yes, but not certainly antagonists anymore
Wasn't Bartolomeo portrayed as an antagonist until we found out his admiration for Luffy?