I'm trying to get the result like the globe which illuminates more than 2 colours. I have 2 examples, one with ColorRamp and one with 2 emission shaders, but the colour variations are not visible only one appears on the plane mesh. I cant figure out the Node configuration to get the result.
Maybe try something like this. Since you're already using a globe (sphere), you can get a good gradient by mixing the Emission colors using a Fresnel as a mix factor:
If you want a "glassy" globe, you can mix the result with a Glass Shader, using the same Fresnel as a mix factor for that too: