In Jain tradition, Udaynath is mentioned as a future Tirthankara in the next utsarpiṇī cycle, not as one of the 24 Tirthankaras of the current avasarpiṇī cycle. Some Jain lists place him as the 7th future Tirthankara. ( jainknowledge.com)

If you want, I can also give you the full list of the future 24 Tirthankaras in Jain tradition.