Hi Casey. The first 3 look like fairly nice new keris, late 20th century. The last 3 are older. #4, the Bugis keris looks like a fairly nice one that could use a good restaining to really raise the pamor pattern. The 23 luk (#6) keris is pretty unusual, anything truly old with that many curves would be. Turn the handle around so it faces like the others. #5 looks like it could be pamor Adeg of some sort, again in need of restaining. #2 and #3 have nice modern examples of rare Jawa hilt forms.
I know you are anxious to find out about these blades you've been gifted, but it might be less confusing if you presented fewer at a time. One ot two would be ideal so people can really focus on what you are presenting and give you more indepth descriptions and analysis.