Reddit mentions of The Chess Advantage in Black and White: Opening Moves of the Grandmasters

Your question is really like two questions. A general opening reference is useful for getting an overview of openings and to check certain lines but doesn't lend itself to actually learning an opening. For that, a specific opening book is much more useful.

The way I did it was to get the Batsford Chess Openings 2 way back when and read all the introductions to the various openings (getting this book now would be a mistake because it's long long out of date, but at the time it was good for a while) and try out a few of the lines. Then, once I'd decided what piqued my interest I got a hold of a book that was specific to that opening.

The reasoning for this is that a specific book will give much more depth and explanation (they're usually written by IM's and GM's that actually use the opening) about what lies in store when playing.

Edit: There's another class of opening books as well. They're called repertoire books and have a line for every response that an opponent makes. One of the better ones is called The Chess Advantage in Black and White. The author went all out with this production and was rightly hailed as someone that had done it the way it's supposed to be done. It's a complete system based on the play of top GM's and doesn't rely on trick lines whatsoever.

Have you tried tactical lines? Open sicilian against d6, Scotch, Italian d4 lines? What was the result?

While your repertoire is totally fine(I would switch Moscow to 1. e4 c5 2. Nf3 d6 3. d4 cd 4 Qxd4! and maybe change the line against Petroff if it happens often enough, that's it) you are avoiding main lines which could be a bad thing for your development as a player.

The problem with lines like Rossolimo - it is hard for a person U2000 to understand what went wrong in the game and improve. When you are outplayed in a positional struggle you don't learn a lot. On the other hand open games are much easier to understand.

Good source for your white repertoire Is https://www.amazon.com/Chess-Advantage-Black-White-Grandmasters/dp/0812935713 - the old book that is a bit outdated but follows 90% of your lines(Everything except Petroff and sicilian e6).

It really depends on your style. I prefer positional lines and not too much memorization so I like https://www.amazon.com/Chess-Advantage-Black-White-Grandmasters/dp/0812935713.