They are barely anything alike. :/Dark Souls is basically what Zelda should have become if it wanted to be a good game in the modern times, so you could try that.
And Zelda games are still very good, not sure what you're talking about.
Anyways, Oceanhorn is quite obviously a Zelda clone. A little bland by comparison, but has the same essence.
What I'd *really* recommend though are
- Hyper Light Drifter - A game that was inspired by A Link to the Past very specifically, though it is not a Zelda clone by any means.
- Ori and the Blind Forest - not exactly retro styled, but it is frankly just one of the most amazing 2d platformers out there.
These two games aren't going to perfectly capture any nostalgia for the games you're asking about, but they take the formulas born from them and innovate and execute on them with incredible mastery. Both are absolute must-plays in my opinion.