Hi @PreciousChicken,
I’m sorry you are having a hard time finding information on ProxyFactory.
Proxy Factory along with the Proxy contracts are in OpenZeppelin Upgrades.
The plan is to move the proxy contracts to OpenZeppelin Contracts.
Currently as you found the documentation isn’t as good as we would like.
I have an example of deploying minimal proxies that you could look at: How to deploy minimal proxies using ProxyFactory in Truffle?
Feel free to ask all the questions that you need and I can try to answer as best I can. You could also put a guide together 