The different sets of Rajarshis were for the son of Pandu. O monarch, all the Gandharvas with Tumburu as their head were in Arjuna's favor.
देवब्रह्मनृपर्षीणां गणाः पाण्डवतोऽभवन्॥ तुम्बुरुप्रमुखा राजन् गन्धर्वाश्च यतोऽर्जुनः। प्राधेया सहमौनेया गन्धर्वाप्सरसां गणाः॥