Muhyi
No. The form Muhyi as an honorific element does not occur as a personal proper name in the Quran; it stems from the verbal root ḥ-y-y which does appear in Quranic vocabulary related to giving life.
Yes. The element is most famously part of the honorific Muḥyī al‑Dīn, used by Sufi figures such as Ibn ʿArabī (commonly known as Muḥyī al‑Dīn Ibn ʿArabī).
It can be used as a standalone given name or as an element in a compound honorific. As a standalone it is rare and has a distinctly Sufi resonance.
Muhyi emphasizes renewal and life-giving—metaphorically the reviving of faith or spiritual vitality, concepts important in Sufi discourse.
Muhyi is Arabic in origin but has been adopted across Persianate, Turkish/Ottoman, and South Asian Muslim literary and spiritual traditions as part of honorifics and names.