Forks and electrum cold storage

[Basti27]

Hi all,

I searched the internet how to claim all the forked coins for my btc.

I have 2 questions:
1. What is the best way to claim and send it to an exchange, if my btc are in an electrum cold storage?
2. Which forks were successful since bitcoin gold?

To 1.: I heard that it is possible to import the private key into a conami wallet, but then I should not use my cold storage anymore, right? And maybe even move my BTC to a different wallet? Is there a better solution available and if not, is it possible to reuse my coldstorage wallet on USB stick with a different private key?
To 2.: I heard of bitcoin god, silver, platinum, but don't know which were successful. Is there any list available?

Thank you in advance.