What does Reyansh mean?
A modern coinage usually read as 'ray of light', often analysed as 'ray' plus the Sanskrit amsha (अंश, 'portion/part'), giving a devotional reading 'a part of Vishnu'. The Vishnu link is an interpretation built on amsha rather than a documented classical meaning.
What does Aryan mean?
From Sanskrit arya (आर्य), 'noble, honourable, worthy'. The original sense is one of nobility and virtue; it is unrelated to later misappropriations of the term.