Yup. Plus, Buggy and Kuro plundered and killed as well. Kuro stopped because he got sick of running, but Buggy was just 'parking' in the town where he and Luffy fought for the time being.
Don Krieg also plundered, as he tried to hijack the Baratie, and had a reputation for using all kinds of cheap methods to win. Bellamy's crew can also be counted as pirates - you never see them doing 'piraty' things because they were docked and taking a break. Even the Foxy Pirates pillaged; they gambled and cheated to usurp others' shipmates and their treasure.
Even Luffy's resorted to pillaging before. During the Skypeia arc's ending, he woke everyone up personally with the plan to steal the gold - something you'd rather have expected from a money-lover like Nami. Sure, they were going to give them the gold anyway, but they never knew that and planned on robbing them blind.
So it looks like nearly all the pirates in One Piece really are pirates. Well, how about that.