Summary
The process of analyzing macOS memory dumps itself is not very different from that of Windows or Linux. However, there are a number of nuances to be considered.
First, Volatility profiles for the latest versions of macOS are hardly available, and at the moment, the only more or less adequate way to get them is to use proprietary memory dumping solutions, where profiles can be created automatically along with the dump.
Secondly, not all of the Volatility plugins that work fine on older versions of macOS show good results on the latest versions of the operating system. In addition, the performance of the plugins may depend on the architecture of the chip used on the target host from which the dump was taken.
Third, the tools that we used for file recovery from Windows and Linux, such as PhotoRec, will not be so helpful for macOS versions starting from macOS High Sierra, as they lack APFS support.
Otherwise, the methods of analysis of memory dumps themselves remain...