You might find this book of interest. This author was also one who wrote about the bloodline of Christ/Mary etc. LOTS of good info in his writings.
When referring to Y heads, we also need to be looking at all of the bull/cow Gods and Goddesses. Both the Dravidic and Aryan cultures held the cow in high regard ( Dravidic = Hindu )
While the title of this book seems a bit dark, it actually has quite a bit of dense material in it. Although not always well connected, the potentials it draws are incredible.
#1 Civilization originated in the Indus valley and moved to Mesopotamia.
#2 Celts were Dravidic in nature, NOT Aryan. Think Gypsies, South India etc. Celts were dark haired and dark eyed. NOT blue eyed blonde haired like Aryans were purported to be
#3 traces the bull horn god/goddess path from India to Mesopotamia to Egypt to Crete and on forward. Again, follow the Y head.
Just my thoughts.
Also the Moura book traces a lot of Celtic symbology and shows its similarity to older styles across the world. All the way back to the Hinda swastika…