Hello Aspirant,

See for seat allotment in deemed universities there are four rounds usually first two rounds are normal rounds in All India Quota counselling and for vacant seats a mop-up round is conducted by DGHS and even then if the seats remain vacant then those seats are reverted back under the stray vacancy round counselling. 4th round which is also called as stray vacancy round counselling is conducted by the deemed universities itself for the seat left vacant after the mop-up round counselling.

For more details kindly check out the link given below :-

NEET Counselling 2021: Registration Dates, Documents Required, Rounds, Seat Matrix (careers360.com)

To have a list of all those colleges which you can get based upon your marks, category, and state you can use NEET College Predictor because it will make you comfortable while choice filling in counselling :-

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck!!