The questions and support issues for Android and the Ubuntu distribution are highly different and it will eventually become mess. Don’t take my word for this ask the group or look at some other more mature groups to see how they are partitioned - notice for example Raspberry PI has forums for Raspian, Arch, Fidora, RISCOS, and other. Pretty much all the issues - like how to setup wifi, get apps, configure networking, which apps are available, repos, drivers, all are highly different between Android and Ubuntu. It’s nice to be able to go to the forum section that matches what you are doing which contains posts from others trying to do what you are doing.
Wrt Windows 10 on the 410c board it was demonstrated publicly at the MakeFaire launch of the board. So that will come too as a support topic.
I draw your attention to this info : https://www.qualcomm.com/news/releases/2015/03/18
I further draw your attention to the 410c’s feature list - look under OS support: https://developer.qualcomm.com/hardware/dragonboard-410c