Since you are a newbie planning to start a mining farm I suggest you read this first "First time/Small miner reference for getting started."
And read this for the list of ASIC manufacturer and distributor "Current List of Competitive Hardware"
For a list of ASIC miner both BTC and altcoin ASIC you can check this http://asicminervalue.com/
If you are looking for mining pools check this https://miningpoolstats.stream/ just choose the BTC for the list of BTC pools.
that´s fantastic. Thanks for this links
why have more profit an asic who works with 3GH/s than other that works at 110 TH/s? like antminer S19 Pro vs E9. It´s for the ratio between cost of buy this asic and the profiability of work?
edit: ok i understand. Is not the same process hashes of ethereum than hashes of bitcoin i suppose....