Einaudi was my gateway drug - I'm also a fan of Nils Frahm and Agnes Obel.
Some others to check out are Max Richter, Florian Christl, Jacob Van Veen, Poppy Ackroyd, If you use Roon Radio, you'll find at least 50 more modern composers. It's incredible the amount of excellent Neo-classical or Classical-Crossover music that is available now. I'm more into piano and strings, and I'm amazed by Florian Christl.