Your personal Tumblr journey starts here
I drew danny with a few of my head cannons. I was having fun with the design for the inverted nasa shirt that he would most likely have under his jumpsuit.
You want angst? We have angst!
AnneriaWings - a leader of the dissection subgenre, with a fanfiction.net favorites list that reads like a 50+ hour angst playlist
anthrop (ao3) - lots of angst and body horror, some of the absolute coolest prose (and best superphantom crossovers)
Chaos Dragon - works are split between (sometimes mature) Danny/Sam and some of the hardest hitting tragedies I've read in the phandom
Cordria (ao3) - The Place To Begin!!! Several hundred fics once you factor in the oneshot collections, covering literally every genre under the sun and angst that will change you forever
Danny Phantom SG-1 - the author who taught me that fanfiction was designed to be a vessel for angst, will bash you over the head with your own feelings
HaiJu (ao3) - one of the most polished and highly recommended authors in the phandom for a very very good reason
Laora (ao3) - one of my favorite authors of all time, and creator of Empty Promises (ao3) aka the angstiest fic in the phandom
Nylah - fantastically atmospheric angst that I literally have not been able to stop thinking about since I first read them
Phantomrose96 (ao3) - All Of The Angst. Also "it's not gay if he's dead." And no matter where it falls on the angst-to-crack spectrum, it's excellent
Shenzuul - such well written, grounded fics that I keep coming back to read them over and over again
surelysilly (ao3) - incredibly evocative writing style that immediately paints the atmosphere, some really great creepy angsty stuff
Everything else under the sun (including more angst!)
avearia (ao3) - soooooooo many good fics omgggggg
CoronaIgnis - leader in the Ghost King Danny trope, really amazing world building
dpluver - Queen of Snarky Danny and some of my favorite funny and/or fluffy fics in the phandom
KicsterAsh - wonderfully feel-good series about Danny becoming an astronaut
Lacey52 - really well developed trio-focused series with incredible characterization, Danny/Sam
Lynse (ao3) - so so many good fics that it blows my mind (and all sorts of crossovers)
mabel-but-slytherin (ao3) - really intricately thought out theories and premises and crossovers
MsFrizzle - great oneshots and fics with canonically Jewish Sam
MyAibou (ao3) - incredibly well crafted fics and series that explore all the things that the show could have been, it's amazing
pearl84 - author of the biggest fics in the phantom like Checkmate and Dawning of the Sun
PixieGirl13 - so many nice long action-packed fics with some of the best Danny and Vlad interactions out there, some of my absolute faves
PuppetMaster55 (ao3) - angst and romance and crossovers (oh my!!)
sapphireswimming (ao3) - 100+ gen works including plenty of angst, hurt/comfort, friendship, humor (and superphantom crossovers)
SRL541 - not too many fics but every single one of them is so good??
Tay1019411 - all of the hurt, all of the comfort, and then all of the everything else and it's all just so good
The Cinderninja - some of the most beautiful well-thought characterization I've ever seen, I cannot recommend these fics enough
WingsOfMorphius - really good Danny/Sam, well worth reading even if they're incomplete
If you're looking for more:
I'd highly recommend everything in my ffn favorites!!
Plus here are some highly regarded classic phandom authors that may not be crossposted to ao3 (under the read more), long fics, creepy fics, dissection fics, angsty fics, more angsty fics, and other fics rec posts (increasingly Danny Phantom-centric the further you scroll back)