Conversation so far:
Where did this art originate?
found in Scandinavia, north Germany and England.
Did the style migrate at all?
so that in the 4th century when Huns pushed German tribes westward, they spilled across the Empire's borders and began to settle there.
Did the artwork travel with the Huns?
Three styles dominate Germanic art.
The polychrome style originated with the Goths who had settled in the Black Sea area.
What did this poychrome style look like?
CANNOTANSWER.

Question: What were the other styles?
Self-contained rewrite: What were the styles other than polychrome that dominated Germanic Art?