I really agree with this.
There's plenty of information out there about the different styles of music... but the challenge is that greek music is TOO diverse and you need to know what to look for. There's no such thing as greek "wedding music"... hardly any songs actually talk about weddings, with exception of 2 or 3... of which only one is normally played... but also because each greek crowd is going to be different based on where they're from in greece. Think of it this way... while in the latin culture there's bachata, salsa, merengue, etc. and depending on which country they're from usually determines which of those you play... the same rule applies in the greek culture... however in the greek culture we have 100's of styles... literally each island (dozens) and each region of mainland greece has different types of styles of dances that are expected. For example, xios has a different set of traditional dances expected, and they normally don't do the generic stuff, crete has a bunch of dances specific to its island, northern greece has it's own style, so on and so forth with every area.
This is why there's so little out there on "greek wedding music"... it just has no meaning in reality and It's just too hard to write generic info for. However, if you ask your bride or relative, what styles do you want (I literally ask that to every greek client), and they name them, and maybe even provide examples of specific songs that their family enjoys... then you can just go on youtube and either find medleys or examples of songs under that style. Or you can just ask me lol. For example, someone on here contacted me once saying a bride said she needs Zebekika and also music from a specific island as well as a couple of current club songs. When you get that info from the client, it's very easy to find what is needed. If they say just the basics... then what I mentioned in my first post is the generic stuff for people that want greek music but dont know what is what themselves. Despite having thousands of songs, knowing the traditions inside out, and knowing what to play when, I still ask every client what traditional songs are popular amongst their direct family, as they all have different preferences based on how they dance. Some literally want a specific version or musician/singer, or else they won't dance to it. I always lead with their choices when playing a certain style, and if more is needed, then I go deeper into my crates.