AirTel Postpaid family plan for a single connection gives you 4 SIMs. 1k + tax. Every additional connection is 300 I think. Not saying it's the best but it is what I use for my house. 5G speeds are good as well. I get around 500mbps in the night and around 300 in the mornings.
Also based on my observation, North India = Jio. South India = AirTel.