It doesn't matter - they're the ones that make Confluence work when you install it off-the-shelf. I'm not sure why you think you need to know this? Run a trial of Confluence, if it doesn't have something you need, then look for an addon to provide it.
I was curious as to why you think it's useful to try to compare Cloud and Server versions in terms of plugins, as most answers to that question probably have a better approach. This one certainly does - 99.99% of users simply don't need to take a "this system plugin does that" approach to Confluence. Use Confluence off-the-shelf, as documented on Atlassian's site. It's utterly irrelevant what plugin provides what function.
That's fine, my point is that what plugins do what are totally irrelevant. Macro X does Y is perfectly sensible, and it's the way Atlassian have documented them at https://confluence.atlassian.com/display/DOC/Macros - that will always cover the macros a plain installation of Confluence will provide. It's generally good enough that most people documenting Confluence for internal use can point at it and say "here's the list of macros you *could* use" and then get stuck into documenting how the organisation could and should use them to create good pages and spaces - a worked example of a clever page is often a good start!
Most of us don’t need much convincing that stakeholder management is important. It just makes sense that keeping everyone in-the-know on projects and assigning clearly defined roles is key to having ...
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