Steem tokens can only be mined by the top 21 witnesses and in generally many of the cryptocurrencies are not mined in this way that's why many of the people who have a good hardware and software access will be able to mine crypto tokens. Energy requirement and expensiveness of the technology like expensive computers are required to miners for mining ⛏️.

You have shared very good methods for the mining of the cryptocurrencies and proof of stake is the most common method from all of the above that you have shared with us and over all you presented your article with your every possible hard work so I wish you good luck