hey,

streams or discipline broadly allowed for ISRO recruitment are

electronics

1. applied electronics

2. communication

3. electrical electronics

4. electronics

5. electronics and communication

6. electronics and power

7. electronics and telecommunication

8. industrial electronics

9. power electronics

10. telecommunication

11. instrumentation technology

12. instrumentation and control

13. electronics and instrumentation

14. avionics

mechanical

1. industrial engineering

2. industrial management

3. industrial production

4. manufacturing sciences/engineering

5. mechanical engineering

6. metallurgy

7. production engineering

8. production management

9. aeronautical engineering

10.aerospace engineering

11. mechatronics

computer science

1. information science

2. information technology

electrical

1. electrical and electronics

for more information you may refer to the link mentioned below

https://engineering.careers360.com/articles/isro-recruitment

good luck!