None of us knows anything certain about who the maker is, that much is clear! All I can say about them is that it looks like they were produced in reasonably large quantities, they fit in very well with the current fashion for retro furnishings from the 60s and 70s. Much like the tall Italian decanters with the pointy stoppers their stock is probably higher now than at any time since they were manufactured.
Calling them Coquile knock offs is doing them a big disservice, they were not made to deceive they were produced to service an eager market, probably quite some time after Flygsfors went out of business too.
Far too often I hear similar, this is a knock off, that is a copy, nearly always rubbish in my opinion, every company will try and make products that suit the current market and fashion so no surprise if there are similarities. Fakes are made to deceive, the only glass example I can think of off hand are the paperweights with faked Paul Ysart signature canes. This is an entirely different dynamic to a seller claiming something is X when it is really Y, usually through ignorance or greed. Adding a fake signature does not make a given object a fake either, just the signature.