Can a knowledgeable person please enlighten me on the setup of my prayer altar place please.

To start off with I have got a different prayer room. I have got the following deities:

Shri Ganesh
Shri Murugan
Shiv Bhagwan and Parvati mata with Ganesh ji sitting on Shiv Bhagwan's lap
Nandi
Durga Mata
Natraj Bhagwan
Kali Mata
Shri Hari Vishnu
Laxmi Mata
Ram Darbar
Hanuman ji
Shri Radha Krishna
Bal Krishna
Gou (Cow) Mata
Saraswati Mata

I understand that Principal Gods (Shiv Bhagwan, Parvati Mata and Laxmi Narayan) are given the highest altar place.

Demigods like Rama and Krishna are given are given a slightly lower altar place then Narayan and likewise demigods of demigods (like anjaneya) are given a lower altar place then Rama.

Can someone please verify these for me. Can you please tell which deities "from the ones that I have" to put on the highest position of the altar, the second position and third forth so on......

Dhanyavaad
Jai Sia Ram