Please write where can I find up-to-date information how long will the sending bitcoin transaction take depending on sat/byte.
Transactions are prioritized based on the fee paid per vbyte, not byte.
vbyte is a unit for measurement of virtual size of transactions.
In the case you use segwit address(es), the virtual size of your transaction will be smaller and the required fee would be lower.
Anyway, I also recommend you to use
mempool.space. That's very helpful especially for newbies. But if you want to see a very accurate graph showing the mempool state, you can use
jochen-hoenicke website. It allows you to analyse the mempool yourself.