Switch may not be about high end graphics, but that doesn't mean games on it can't look nice, and a bunch of new challengers have released since the last time this topic was covered.

So, as of this point in time, what do you think is Switch's best looking (released) game, and why?

Still Mario Kart 8. That game cheated somehow. I don't get it.

Hollow Knight.

Zelda: Links Awakening remake.
The art in that game is simply fantastic, so is the material shaders employed.

Fast RMX continues to be one of the most technically accomplished games on the system.  But there are other major standouts. 

Mario Odyssey I don't think gets anough credit in this area, that game looks excellent.  And setting asside the aliasing issues, New Donk is probably the most impressive depiction of a dense urban environment Nintendo has ever produced. 

Astral Chain is an interesting one as it does present visually compelling environments but it's actually a lot of tricks going on and mostly makes very, very clever use of Gen 7-era techniques to give the appearance of Gen 8 techniques.

Luigi's Mansion 3 looks excellent with great visuals making use of current gen techniques and exquisite animation.

And then Yoshi's Crafted World is probably one of the best UE4 games on the system in terms of using the tech in a balanced way, despite the resolution issues.  

Monolith didn't make as much of a splash in terms of tech with Xenoblade 2 as they did with X - likely due to X having so much excess time in the oven - but there were some definite highlights there that were much more cleanly represented with the improved Torna the Golden Country.  I don't think either game is in the "best looking" conversation even with Torna's improvements,  but you can tell Monolith is getting there.   

For 3rd party, Witcher 3 is the most impressive achievement without a dout, but best looking?  For my money, it could be Grid, Dragonball FighterZ, Dragon Quest XI, or Doom.

Edit:  Almost forgot Smash Ultimate,  which is a huge upgrade over Smash 4.

Luigi's Mansion 3 took light effects to another level. Haven't seen it in that impressive way in any other Switch game. Also Luigi's countless different animations/reactions are gorgeous. There was a big graphic boost between E3 and release.

Mario's Odyssey hands down.

Best looking Switch game this year? Luigi Mansion 3, no contest

I mean best looking Switch game of any year so far, just that this is the end of 2019 edition of this recurring thread.

My answer won't change, that game look too good with AA even in handheld mode, there is even a thread to praise it's graphic in resetera