Mahavideh Kshetra is divided into 32 provinces (Vijays), arranged as 8 in each of the four directions / quadrants. It is also described as consisting of 32 provinces between the Niṣadha and Nīla mountain ranges. ( jainpedia.org)

Present 20 Viharman Tirthankars in Mahavideh

At present, the 20 Viharman Tirthankars are present in the Mahavideh area. Their names are: ( jainworld.jainworld.com)

1. Shri Simandhar Swami
2. Shri Yugmandhar Swami
3. Shri Bahu Swami
4. Shri Subahu Swami
5. Shri Sujat Swami
6. Shri Svayamprabh Swami
7. Shri Rishabhanan Swami
8. Shri Anantvirya Swami
9. Shri Surprabh Swami
10. Shri Vishaldhar Swami
11. Shri Vajradhar Swami
12. Shri Chandranan Swami
13. Shri Chandrabahu Swami
14. Shri Bhujangam Swami
15. Shri Ishwar Swami
16. Shri Nemiprabh Swami
17. Shri Virsen Swami
18. Shri Mahabhadra Swami
19. Shri Devyash Swami
20. Shri Ajitvirya Swami ( jainworld.jainworld.com)

Where they are present

The present Viharman Tirthankar tradition is in the Mahavideh region, and Mahavideh exists in Jambū-dvīpa, with additional Mahavidehas on Dhātakīkhaṇḍa and Puṣkara-dvīpa. ( jainpedia.org)

If you want, I can also give the 32 Vijay names in a neat Jain map-style list.