Any would be beautiful. I think all you will want to consider is the size when making your choices. Large leaf, small leaf, tall, short, texture, etc. I can't grow lamium here and miss it very much - a beautiful plant in and of itself.

I agree with lupineloon. Note the height and spread of your Lamium and choose your hosta considering your space and how you want the bed to look.

Here's a link to my personal favorite blue.

Here is a link that might be useful: Beautiful blue hosta, the drinking gourd