Is a 1 year PG diploma from a distance education school considered as 16th year of education

Hello guys, I wish to pursue MS in CS this fall 2022. My academic profile is shown below. Which universities do you guys think I have a good shot at?

- B. Tech in ECE - (10 CGPA -> 4.0 GPA) (1st in university, awarded gold medal, but from I'd say a tier 3 university).

Do Professional LOR’s require any stamp from the company?

Do we need to get the lor sealed / stamped or is it not required and can we submit a pdf?

Any suggestions to shortlist my Universities according to my profile??

GRE - 321TOEFL -99CGPA - 8.35Currently working in Servicenow as Tech support engineer. Total work ex - 3 yearsUnder

University suggestion based on my profile for MEM Course

Current cgpa 7.66GRE score 300Quants 154Verbal 145 AWA 2.52 internships 2projects based on arduinoTrying to give