Sigzil May not be a skybreaker
We do not know which other order Sigzil joined. And this page should not directly claim that he joined the skybreakers until we have confirmation of this outside of the artwork https://www.brandonsanderson.com/wp-content/uploads/2023/10/13_worth-saving_web.jpg. It may be tempting to add this information, but it is currently only speculative.
Chapter 28 directly calls Aux a Highspren. Does that not confirm Sigzil is a Skybreaker? Sorry if this is an inappropriate place for this. I was reading the wiki and wanted to help.
"I like change, Nomad. My kind were too static for too long, particularly we highspren. And sometimes the way you talk makes me think you believe, or can pretend, that you are an entirely different person now." - The Sunlit Man Chapter 28
- Correct, Aux calls himself a Highspren (as shown in the quote above, which I can confirm is correct), and we see a Skybreaker glyph form behind Sigzil, I feel that is enough to logically assume that he became a Skybreaker, unless the way that Knights Radiant changed and made it so that Highspren could give you any order and not just one. Which I feel we shouldn't assume to be the case without direct confirmation itself.
- Skips are also definitely not just the Surge of Transportation, it is something special to the Dawnshard. With our current knowledge, we should only assume it is a power granted by the Dawnshard, and not by an unrelated Surge. As that fits the most with current evidence.
- Your edit also does indeed have bad links, such as Knights_Radiant, which is a red link as the page isn't called that, it is called Knights Radiant without an underscore. Our system of links here does not use URLs, but page names, thus underscores are not included. I do understand that mistake, however.
- -Firesong