Nice work. Its really important to consider this for those buying/holding crypto currency. Consider all coins using the same function to be the same family and the one with the most work and power to be the most valid. So there are sha256 coins, scrypt coins, equihash coins, etc. In the case of sha256 the most immune to attack is bitcoin. Everything else is massively vulnerable. In the case of scrypt, it’s litecoin. Everything else you should not hold because it can be swamped by the hashing power mining litecoin atm. So on.

This is a little different from how people have been told to think about it before which is just focusing on the blockchain itself rather than the mining power behind any given variation/fork/whatever of block chain.

Ps. And that probably should be taken a step further. If you have families of coins that are all GPU mined, then you need to consider the tota GPUs mining them and the hashing power of those GPUs and the ability for them to switch functions. Now GPUs are a blip on ASICs so for the predominantly asic mined coins this doesn’t matter.