This ragam is Mahati, an invention of Dr. M. Balamuralikrishna. The arohanam and avarohanam is as follows:
Arohanam: S G3 P N2 S
Avarohanam: S N2 P G3 S
This is a rare example of a ragam employing only 4 swarams in both the arohanam and avarohanam! Dr. Balamuralikrishna has composed a song "Mahaneeya Madhura Moorte" in this ragam set to Khanda Chāpu tālam....
The timestamps in this answer reference the full album (linked on Amazon Music), and not the extract on YouTube.
Ganesh and Kumaresh play kalpana swarams in Sankarābharanam from 6:26 to 10:17 mins. The ragamalika swarams begin from the 10:17 mark, and follow a clear progression.
The ragamalika swarams are played in 24 different ragams, in sets of 6. The ...