Vedic Samhitas cover the glories of the gods as well as how they helped certain human kings but I find it surprising and perhaps suggestive of some later political intervention that there are NO Suryavanshi Kings mentioned!
There are many specific mentions of the sacrificer's Chandravanshi lineage such as in this verse but none mentioning Suryavanshis:
30 Praise yea, praise him. Of princes these are the most liberal of their gifts, These, Paramajyā, Ninditāśva, Prapathī, most bounteous, O Medhyātithi.
31 When to the car, by faith, I yoked the horses longing for the way- For skilled is Yadu's son in dealing precious wealth, he who is rich in herds of kine.
32 May he who gave me two brown steeds together with their cloths of gold, May he, Āsaṅga's son Svanadratha, obtain all joy and high felicities.
Again, the names of many Chandravanshi kings can be found throughut the texts for example in this verse:
4 Agni thou madest heaven to thunder for mankind; thou, yet more pious, for pious Purūravas. When thou art rapidly freed from thy parents, first eastward they bear thee round, and, after, to the west.
11 Thee, Agni, have the Gods made the first living One for living man, Lord of the house of Nahuṣa. Iḷā they made the teacher of the sons of men, what time a Son was born to the father of my race.
17 As erst to Manus, to Yayāti, Aṅgiras, so Aṅgiras! pure Agni! come thou to our hall. Bring hither the celestial host and seat them here upon the sacred grass, and offer what they love.
Also, the progenitor of the Chandravanshi race - Ila is mentioned as a goddess in the same vein as Saraswati:
9 Iḷā, Sarasvatī, Mahī, three Goddesses who bring delight, Be seated, peaceful, on the grass.
Considering the fact that Brahmarishi Vasishth, one of the key contributors to the Vedic corpus, was the chief preceptor of the Solar Clan & Brahmarishi Vishwamitra, another contributor and the discoverer of the Gayatri Mantra was also associated with many Suryavanshi kings such as Satyavrat & Harishchandra it is extremely surprising that none of them find mention in the Vedas. Even Mandhata, who was nursed by Indra, the quintessential hero of Vedas, seems to be missing.
So my question is - Are there any Suryavanshi kings mentioned in Vedic Samhitas or do these texts focus only on Chandravanshi kings?