It is said that the Vedic god Aryama, the son of Aditi, is the foremost among the Pitrs or manes. This has also been stated by Lord Vasudeva in the 10th chapter of the Bhagavad Gita:
अनन्तश्चास्मि नागानां वरुणो यादसामहम्।
पितॄणामर्यमा चास्मि यमः संयमतामहम्॥२९॥
Among snakes I am Ananta, and Varuna among gods of the waters. Among the manes I am Aryama, and among the maintainers of law and order I am Yama (King of death)
What is Aryama’s role as the foremost of the Pitrs and how is he linked to them? What are his divine duties?
If Aryama is linked to the Pitrs, then what is the difference between the role of Yama (who gives jeevatmas a place depending on their karma) and Aryama? (We can see Krishna has distinguished Aryama as being the head of the Pitrs and Yama as a Dharmaraja.)
Like Yama, is Aryama worshipped during Shraddha rituals/ death rituals of a person? And if the answer is affirmative, then what is the purpose of worshipping him (again linked to what is his role, that we worship him)
The Puranas talk of many divine Pitrs (with their wife Svadha) being Barhishada, Agnishvatta, etc. Aryama being an Aditya does not feature among these groups and is considered entirely separate. Is he the ruler of these Pitrs (if he is the ruler then how is Yama king) Or does he help them in their respective roles?
Kindly note the question is not a duplicate of Who is god Aryama in the Vedas?; Reason: the linked question asks who he is, whereas my question seeks clarifications, not as to his identity, but to his role as a Pitr, comparison with Yama and his worship, which do not find mention in the aforesaid question.