Mudar
Mudar is recorded in Arab genealogical tradition as the eponymous ancestor of the Mudar tribal confederation and appears in classical genealogies.
No; Mudar is a genealogical/tribal name found in historical sources, not a Qur'anic proper name.
It is rare but occasionally used by families emphasizing Arab ancestral or tribal identity.
It signifies lineage and tribal belonging rather than a descriptive moral quality; it points to descent from the Mudar lineage in Arab tradition.
Yes; common scholarly/transliteration variants include Mudhar and Muḍar reflecting classical Arabic orthography.