TV: N/A, different family members get different streaming services, and we share.
Landline: Set up Obihai with old landline phones, moved old landline phones to Tmobile for 24 hours, then to Google Voice. Made copper landlines a closed loop, so main phone doesn't need to be plugged in next to Obihai/router. Yes, will go down if internet down, but At&T wanted to charge $120/m for copper landline.
Phone: Verizon. Have old grandfathered plan, maxed out 10 people for savings. Pay for it with US Bank Cash+ to get 5% cash back for plan cell phone plans, have others pay me their portion. Ends up that most members pay $35/m, I end up paying $13/m.
Internet: Spectrum. Use AskTrim to lock in price at $55. Use own router, and third party DNS.