All 3 Chennai Mumbai trains are of CR. SR is not running even a weekly train in this sector.
For ATP, SCR should run a train. Bangalore side trains via ATP are also non SWR.
You ask SCR GTL authorities for a Tirupati Mumbai train via Madanapalle, Dharmavaram, Anantpur, GTL WADI SUR PUNE. Running time around 20 hours.