Sadly, there are no longer any sedans available near the Rs 40 lakh mark, thanks to low demand and a shift in preference to SUVs, and it's unlikely any will launch in the coming years as well. In fact, the ₹30-40 lakh segment has effectively become a dead zone in the market.
As for other body styles, you could look at two Stellantis SUVs - the Citroen C5 Aircross and the Jeep Meridian - which are very different takes on the premium SUV. The Citroen is more fun to drive and comfortable with a smooth diesel engine, soft seats and excellent suspension. The Jeep feels more rugged and upmarket with great off-road ability, should you need it, and a luxurious cabin with the option of a third row. You could stretch your budget a bit and get a Skoda Kodiaq, which is the closest thing you'll get to a Superb for the time being.