Hi Jenny,
Welcome to the forum. We've covered the use of SEA weapons in piratery in the past. Search the forum for pirates and some very interesting discussions will come up.
The examples you list do not seem very old, not exactly representative of the good stuff. The sword with a hook at the tip is called a kampilan, used by the Moro people of the southern Philippines island of Mindanao. many threads on those.
Also search for talibon, tenegre, mandau, kris...there is lots to look at here
Emanuel