Assyrian and Persian motifs

[Etain]

Does it strike anyone else how similar they are?
Did the Persians adopt them from the Assyrian empire or vice versa? Or did it develop from mutual contact? I think it's pretty interesting.
Winged bulls of Nineveh

Ruins at Persepolis

Aramean-Syriac flag

Faravahar,Zoroastian symbol

Standard of Cyrus

 

[Cascade]

Yes. I don't know why. And who had these designs first?

 

[Etain]

Yes. I don't know why. And who had these designs first?

My guess is it stems back to when Mesopotamia has part of the Persian empire.