The larger two are kuhkris of some variety, whether tourist pieces or something else I couldn't say. I'd lead towards them being tourist items due to the amount of engraving, but it wouldn't be the first time I was wrong, especially on this subject which I know very little about. I'd suggest taking them over to the Benard Levine subforum here on this site. There are some guys there that really know kuhkris. An alternative might be the HI Cantina here as well. The smaller knives look like miniature swords, certainly not like any karda I've ever seen, which again says touristy to me....