SACDExtractGUI works exactly the same for Windows, macOS, and Linux, so any instructions you see in this thread using it pertain to all OS versions, there is nothing specific about macOS that makes using it any different from Windows or Linux with this program.Are there instructions somewhere for SACDExtractGUI on macOS?
There is however a difference between the S5100 and S7200 instructions in that the S7200 must be in a sleeping mode when you insert the USB pen drive (Quick Start enabled of course), where with the S5100 the USB pen drive is inserted with the player ON (not sleeping).
None of these methods are difficult or complex, however there is no single cheat sheet available because what was originally just the Oppo and Pioneer brands and 4 player models compatible has now grown to 11 brands and 35 player models, and the instructions are not exactly the same for each one, they differ slightly.
For instance, only Sony brand players require a sleep mode at all, every other compatible brand does not utilize sleep mode. That doesn't mean the use of a Sony is harder, just slightly different in that you have to enable Quick Start in order to enter sleep mode. The more recent ARMv7 Sony players use slightly different instructions than the earlier ARMv6 models do.
Don't sweat it, just pick a player and once you have, then choose the method and instructions that you are comfortable with. AutoRip is easiest, but that doesn't exactly make the server method hard.