I've read that in Shukla Yajurveda Shri and Laxmi are two consort of Aditya (sun god) I'm pretty sure the Aditya here is Vishnu. But aren't Shri and Laxmi name of just one goddess?
भद्रैषां लक्ष्मी र्निहिताधि वाचि bhadraiṣāṁ lakṣmī rnihitādhi vāci
"an auspicious fortune is attached to their words"
— Rig Veda, x.71.2, Translated by John Muir
In Atharvaveda , Lakshmi evolves into a complex concept with plural manifestations. Book 7, Chapter 115 of Atharva Veda describes the plurality, asserting that a hundred Lakshmis are born with the body of a mortal at birth, some good, punya (virtuous) and auspicious, while others bad, paapi (evil) and unfortunate. The good are welcomed, while the bad urged to leave.
The Hymns of the Atharvaveda: Book VII: HYMN CXV A charm against Misfortune
The word lakshmi simply translates as 'fortune' simply i think nothing complicated. And sometimes symbolic in vedic times as in above verse of rigveda.
Granting us riches, Savitar! golden- banded, send thou away from us to other regions That Fortune who, flying, abominable, hath, as a creeper climbs — Atharvaveda: Book VII: HYMN CXV
And here while searching word shri or lakshmi in shukla yajurveda i did not got any appropriate result but the word lakshmi in vedic times denotes fortune as in above verses
The dhyanamantra of Lakshmi mentions श्रियं त्रैलोक्यमातरम्. So Shree is one with Lakshmi. Her beejamantra is also श्रीं which makes the conclusion clear.