There are so many collaborations among cue makers that would make people's heads spin. I've said it above, but the combination of Joss, Jim Rempe, Sigel, Varner, and Helmstetter did more cues for each other than most would comprehend. You just have to have been around a long time and have seen a lot of them.
Yes, and their impact on the industry has been bigger than many suspect. Helmstetter is responsible for the foundation of an Asian cue manufacturing powerhouse that continues today. Joss has been involved in engineering and development through collaborations more than many people suspect, and that extends to Stroud and his shaft development and other works.
I believe it was Chris Tate that said it would be amazing, and difficult, to unravel all the relationships and sort out who made what under what names and where. This was in a discussion about Palmer, Adam, and Kaokao. From the way it sounded he looked into it some because of the Adam made Palmers and he found it all pretty convoluted. For example, people see the Pro versions of the Cobra and Mizerak cues that I have and say they had to have been made by Adam, at least the splices, because Kaokao only made crap. From everything I can find, that isn't true, in fact they collaborated with Adam and some Adam cues were made by them. They actually can and have made very nice cues at the level of quality people typically recognize from the better Adam cues.
It seems what we are talking about here with Joss, Falcon, Sigel, and Varner, only scratches the surface.
I have been looking into a brand that was/is being sold as made by a certain maker that I believe wasn't. In fact I believe they were made by Kaokao and imported. I haven't talked about it openly because I am betting some people at least will feel like they got their dick stepped on. I think others suspect or know it, but I haven't seen anybody openly putting it out there at all. But I have seen a picture of stacks of the cues in plastic sleeves in a shipping box that pretty clearly looks like it came from Taiwan.
There are brands that were made by several makers over the years. Biagio comes to mind. I recently saw someone insist that a certain brand was made by a certain maker. They were originally in the mid 1960's, but by the 1970's they were made by Adam. He knew the maker in the 60's and really just seems not to believe they were later made by Adam. I assure you, the maker and his two kids didn't make tens of thousands of cues in their garage, but this guy thought they did. Even when shown the later catalogs, he didn't believe it.
So, people will assign a maker or brand identity with the best they can it seems. If they are a flipper they race through the internet and find a reference associating the cue they are selling with the best name they can. If they own it, inherit it, or whatever, they seem to do the same. I saw pics of a beautifully restored cue that a guy insisted was made by a US cue maker that sold it with their name on it. It was an Asian import and he dumped a bunch of money in restoring it. No way he would consider it was made in Taiwan, but it was. Even people identifying old cues will say those points or inlays look too good, so-and-so made it himself, or those points or inlays don't look good enough, it was made in Taiwan...and they are wrong on both accounts.
To me it's fun, and interesting. That's how and why I went down the rabbit hole on the Biagio, Mizerak, Cobra cues, and others. Along the way, I found a few gems, too, which is a bonus.