If I'd read on a little farther the first time instead of falling to the floor laughing, I'd have noticed before now that the Danaoi (Danaan Greeks), Germani (Germans), Goths (more Germans), Franks (more Germans), Angles (more Germans), Saxons (more Germans), Jutes (more Germans), Vandals (more Germans), Danes (more Germans), and Normans (more Germans, northern flavor, via France) for sure are not and were never considered Celts. I have my doubts about a lot of the other names in the list as well but I'm too lazy to check seeing that enough is enough.
All of the so-called "Germanic Tribes" were just different tribes of Celts, and they were all related to each other.