Specimen 2 seems to be longifolia, the rest of them although they look like obtus I'm assuming they are maidenii due to the fact the flowers are a distinct yellow (obtus pale off-white yellow) and they are flowing now (obtus nov-jan). From personal experience neither seem to yield appropriately however some strands of maidenii are supposed to be very good so I'd try those ones before anything, unless of course you come across obtus. Welcome!!
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