I think our SAMs are :
1. 15 squadrons(8 launchers per squadron) of Akash - out of which first 2+6 were delivered by 2013 and rest 7 were with seeker and should have been delivered by 2019-20. Each of these should have 125 missiles(5 reloads). This should be used for point defence.
2. 9 squadrons(Can someone confirm if it was 18 launchers or 18 battalions) of Spyder SAM. Some 750+750 Python and Derby were ordered with these as per SIPRI. Again, this should be used for point defence.
3. SAMAR 1 and 2 - jugaad solution by IAF to use EOL R73 and R27 missiles. I am not sure if R77s are also being used this way, or will go this way if Astra mk1 gets inducted in good numbers. There should be over 1000 such missiles still in action with SAMAR 1 and 2, not sure about exact numbers though, as R73 and R27 ordering information and EOL details are not public.
4. Old systems. Not sure but some Pechora were 'digitalized' to make them work longer. Someone with more knowledge than I have can pitch in.
5. MRSAM - 9 squadrons having 6 launchers in each. I believe at least 3-4 squadrons should be live now. Used for area defence.
6. S400 - 3 squadrons deployed, all can target western sector. Used for theatre defence.
Add to this IA orders for 2+2 regiments of Akash SAM and 5 regiments of MRSAM.
Except MRSAM, I believe all others are completely delivered and deployed.
So we should be ok against fighter, cruise missile, MALE and HALE UAV defence etc.
We don't have anything against saturation attacks from rockets and drones both(something which is cheap per interceptor round and can be used like iron dome). None of the systems stated above can handle more than 20-30 interceptions before reload(depends on Pk as well but still).
