Black hat SEO methods in 2018

I want to review usage of Black Hat SEO methods in 2018.
What can we point to Black Hat SEO?
I want to write down paragraphs that don't lose their relevance

1. Buying links on marketplaces. Pay per month rent;
2. Buying links from PBN;
3. Buying dropped domains;
4. Spin content;
5. Cloaking.

Following methods that were relevant in the recent past:

1. Shells. Links from hacked websites;
2. Doorways. Fully automatically generated content without any sense;
3. Xrumer. Mass spam of links;
4. 301 redirects from dropped domains (was usage in 2012).

First five paragraphs now are most popular at webmasters/SEO specialists and they also successfully earn money from it.
Following four paragraphs I can’t say that they now work at all. They just very dangerous and short-term across the results.

Do you agree with paragraphs? What do you want to add?

At this time peoples trying to use just White Hat SEO methods.
Unless selling of PBN links is unlikely to be replaced in the near future.
I want to believe that this method will be alive because many of BHW users have a business and earn on it.

Thank you for attention

p.s. If someone of moderators can edit text in my post for mistakes. Please make it. Sorry for my English if there any mistakes.

Maybe 301 redirects of domains and mass spam of links on tier 2 and tier 3 are still working.

Yes, I agree with you but with some additional information.
301 works with much more spamming and effect can be lower than 3 months.
Tier 2-3 links will make bad things to your website if there you have HQ competitive keywords. Only quality backlinks make you Top 1-3 in a competitive niche.
P.s.I talk now only about backlinks without any other important factors.

Black hats where are you?