The vast majority of non-bonded carbon spokes come from STREN, including all the western brands that use such carbon spokes (Cadex, Scope, Newmen, Black inc, Hunt and more). Winspace were one of the first to use them in mass production. Farsports make their own that they provide to some other brands. Lightbicycle might be making their own as well, not sure. I've heard conflicting things about CRW. CC Joe made it sound like they're a CRW in-house product but another wheel manufacturer says they also come from stren. Komcas (Superteam) has one design to make 1cm wide spokes that I haven't seen anywhere else. These spokes all require special hub and nipple interfaces due to the way the carbon fibres are locked with the metal parts. They are all much stronger than steel spokes and very impact resistant.
There is another type, which tries to emulate regular steel spoke interfaces by bonding the metal parts with the carbon in order to be able to use regular nipples and hubs. This type of design was implemented very poorly by Lightbicycle early on and their were spokes notoriously failure prone. Some customers recieved their wheels with almost all the spokes debonded from their intefaces out of the box. There is an improved version of this type of design that mitigates this by introducing barbs and some other stuff inside the metal bits to better retain the carbon. I haven't heard of failures with these but it is a fundamentally inferior design at the end of the day. I have absolutely no idea who makes them but they're available through Nextie, Aliexpress, EIE, Deerobust and others. They offer no advantage beyond compatibility with traditional hubs and I wouldn't use them over good steel spokes, tiny weight saving be damned.
No6 wheels are Farsports through and through, I could email Farsports right now and I could have my order in production by tommorrow with the exact same parts as No6 for a little more than half the price. They are not the only marketing brand doing this. I saw another yesterday and I thing there are at least another two I don't remember and probably several more I haven't heard of.
I was also asking because I don't see carbon spokes available on xmcarbonspeed website but I have a hard time imagining how they could get to that weight without them.
