Dear Shrishti,

IIT Kharagpur Has released the topper list of top 10 students in all the categories, here I'm providing you the data of  toppers.

1. Chirag Falor

2. Gangula Bhuvan Reddy

3. Vaibhav Raj

4. R Muhender Raj

5. Keshav Agarwal

6. Hardik Rajpal

7. Vedang Dhirendra Asgaonkar

8. Swayam Shashank Chube

9. Harshwardhan Agarwal

10. Dhvanit Beniwal

You can check out this link to know more about the toppers and also read their interviews to know more about them.

https://engineering.careers360.com/articles/jee-advanced-toppers

And for marks vs rank, this is the tough part you will anywhere like it is somewhere hard to predict the rank vs marks for JEE Advance, still I've some data to show you, just don't rely on these data it is just a estimation.

MARKS RANK

260+                                               Under 100

210+                                               Under 500

200+                                               Under 1000

150+                                               Under 5000

125+                                                Under 10000

Hope this will help you, Best of luck!!!