28th mEla harikAmbhOji janya
A: S R2 M1 G3 M1 P N2 S
Av: S N2 D2 P M1 G3 R2 S
This rAgA is very close to harikAmbhoji in character as well, with only the SRMGM (giving a touch of yadukula kAmbhOji) and PNS in the arOhanam to differentiate it. Nevertheless SRG, is also possible in it and well used too, and sometimes just the handling of the G3 with kampita gamaka itself makes it look like one is playing SRMGM or even SRM, depending on how you interpret that gamaka. The N2 is a heavy note as well, with all the possibilities of harikAmbhoji.
The handling of M1 is more plain in general here although a heavier M1 with kampita is also used.
So SRG, and SRM, are both possible.
So the most well known kriti of Thyagaraja (krpa jUchuTaku) - https://www.youtube.com/watch?v=Zgfstktv9Cc - by KVN
And by Mali : https://www.youtube.com/watch?v=lEkW81xRvfI
And itara daivamula of Thyagaraja - https://www.youtube.com/watch?v=eoIdNruLnjc - by Mani Krishnaswamy.
Dikshitar's handling of chAyA tarangiNi is quite different - there is an SSP version as well. It is different enough that's going to come on another thread.