Here's where you need to pay careful attention. As stated above, there are two very common versions of RGB now that are INcompatible. The plain RGB system uses a 4-pin header and supplies the lighting devices with 12 VDC plus three ground lines for control of the colours. The Addressable RGB system uses a 3-pin header (looks like the 4-pin one with one pin missing) and supplies 5 VDC power to the lights, one common Ground, plus a digital Control Line that carries instruction packets with addresses in them. Thus both voltage and control method are quite different. Most of these now are using a virtually identical connector arrangement, but there are some that have their own unique connectors - Corsair is one of these because they entered the market earlier than most.
Now, all of this applies to any lighting device. That include light strips, lights in fan frames, lights in a pump body, lights on a mobo, etc. Well, most lights built into a mobo do not have their own connectors, but are already wired to the mobo. So, OP, IF you want to have your mobo's RGB or ARGB header(s) control ALL of your RGB devices, you really should ensure that all of them are of the SAME type - either plain (4-pin, 12 V) or Addressable (3-pin, 5V). THEN you MUST ensure that the mobo you choose has exactly that type of header on it.
Do NOT rely on "Aura Sync" or "Mystic Light" or other proprietary names for light controls on mobos. Each mobo maker has their own software tool to control their boards' headers. Moreover, many mobo makers sell some mobos with NO RGB headers, some with only plain RGB, some with only ADDR RGB, and some with both types. However, they engineer their software tool to handle BOTH types of headers on whatever mobo you buy from them. So, the SOFTWARE name does NOT tell you what type of HARDWARE header is on the mobo. And it is the header HARDWARE type you need to match to the type of RGB lighting devices you have.
Most commonly a mobo will have only one type of RGB header, and that will force you to ensure that all your RGB lighting devices are of that same type. However, some mobo have two plain RGB plus one ADD RGB header, so conceiveably you could use both types of lighting systems in a build with that mobo. However, the displays from the two types are different and you could not make them ALL do the same thing.