Originally Posted by
therealstegblob
Ignore the other guy posting here. He's just trying to be smug without actually giving you a helpful answer.
To answer your question without being an asshole, Assassination and Outlaw feel pretty samey at the moment in terms of neither particularly relying on Stealth too much. In fact, none of the speccs are really "stealth heavy", unless you simply don't like being in stealth at all. Rogue is actually a pretty powerful solo class, with strong defensives and stupidly high damage output. It's not the absolute best solo class, but Assassination with Leeching Poison can solo tons of world quest bosses and other hard mobs.
Assassination has better single target burst in world content and great AoE, while Combat has incredibly strong AoE and pretty good single target burst. Combat doesn't have Leeching Poison though, and I'm not too familiar with how it feels doing most world content because I usually play Assassination.
I'd suggest giving Rogue another try, because while it needs a little bit of gear to get going (especially Azerite Traits), once you get them you delete mobs super fast. I don't think there's too much general tips I could give that other guides don't (for World Content just follow their guides for AoE damage). I'm not sure what Combat wants, but Assassination is great with Shrouded Suffocation/Echoing Blades/Azerite Beam. With Leeching up I can pull like 15 mobs and just plow them down.