Are there MacBook Pro don't have the electrical tingling problem?

It's not Apple's fault, blame your Electricity provider.
Where I am from there is no problem, they connect the common wire(220 Volt) to the grounding in your house so they are equalized.

I am in Asia right now, I have the same problem as you, the problem is the common wire is not 0 Volt, if you connect the Common wire to the ground the problem will disappear.

Also, your Laptop is made of a metal, which is conducting electricity.

 

Seems impossible to me after disconnecting from mains, the aluminium always feels a bit "rough", maybe you have sensitive hands.

 

Both my MBP and MBA have this if naked..as does my ipad and the new phone. It's not a problem, just amild charge through the metal.

 

That's the best you can do, I think all of them feel a bit rough when touching the metal, bit like fine sandpaper, that is normal.

 

Test this

You can do this test:

1. When the feel reappears, make sure you sit on a wooden chair. When it tingles, elevate your legs to loose contact with the floor. This Way you are Not grounded any more and no current can flow back through your legs to a false ground potential. - Tingling should stop.

 

Yes, it's the same effect, wood does not conduct electricity.

But, I am on the second floor right now, it's also wood and a carpet on it and I feel it although barely noticeable.
Don't even think it is electricity, I think it's the aluminium and maybe vibrations from the HDD.

 

What about putting transparent stickers/protectors on it, you know like on an iPhone, plastic does not conduct electricity.

 

If the charger is not earthed then it might do it, aleast thats what happend with my mbp13 i have not yet used my retina on the short none earthed plug.