My preferences in order:
1. Airtel FTTH if available. Don't go with their copper connection. Even if they upgrade to fiber in your area, they won't upgrade your connection to fiber immediately. You will have to follow up and raise complaints regularly.
2. ACT. People have had bitter experiences but if you don't have an issue, you'll love it. It is rare as they monitor their last mile boxes all throughout the day. I have an area office just 3 houses away from my house. I went there once and they keep a track very well. They monitor their connection 24x7. I love an ethernet wire than a clumsy FTTH setup at home.
3. Hathway FTTH. Prefer this only if you have FTTH in your area. Don't go with their DOCSIS connection. They're still on it in some areas. They laid their fiber very well in many areas. You'll experience very little issues due to faulty wiring during rains as it happens with local providers. I shifted to Hathway FTTH from ACT this month. I have no bad experience with ACT, but wanted to try out. Works well with no issues. If pricing is not an issue prefer ACT over this.
4. Any other ISPs that do great in your area.
5. Jio, BSNL FTTH always last. Jio has pathetic upload speeds if you are looking for a good WFH setup. Even though we don't upload much, it pisses me off as to why they cannot offer better upload speeds on fiber. BSNL has a lot of issues, internet works without issues but if you get a connection without worrying for it, it is a miracle. If you are in Hyderabad, you should not even think about BSNL