As I have been doing every year, I make a list of all shows that I watched in 2020 in preparation for my annual end-of-year evaluations, but due to my busy life I'm just going to do my simulcast rankings seeing that it's quite a lot of effort that I'm unwilling to put this time around. In any case, here's what everything means:

* Indicates a simulcast title (and hence, eligible for all categories)
** Indicates a split cour simulcast title that will continue sometime in 2021
^ Indicates a show that's rewatched (and hence, ineligible for most categories)
Blue indicates show was watched in English
Red indicates show was watched in Japanese
Purple indicates show was watched twice in both English and Japanese.

And I explain what shows go under which categories.

Completed - All shows that I have watched through to the end, both for the first time and through rewatch.
Ongoing - All shows that I have started watching and plan on continuing to watch.
Movies and OVAs - All movies, stand-alone OVAs and specials, and OVAs in which I didn't watch the TV series for (i.e. if I watched the TV series and the associated OVAs, it will be listed in Completed and not in this category)
Dropped/On Hold - All shows I started and stopped watching with no immediate plans to continue.

Forest of Piano season 2
Release the Spyce

Rifle is Beautiful
Magmell of the Sea Blue
Dance With Devils
Meiji Tokyo Renka

Sky Wizards Academy

Comic Girls
Luck and Logic
Soul Link
Happiness! (TV and OVA)
Hataraki Man

A Certain Scientific Accelerator
Mobile Suit Gundam The Origin: Advent of the Red Comet

Brighter Than the Dawning Blue
Cagaster of an Insect Cage
Nobunaga Concerto
Knight's and Magic
7O3X Fastest Finger First
*Science Fell in Love, So I Tried to Prove It
Bodacious Space Pirates

Azur Lane
*Darwin's Game
*Fate/Grand Order: Absolute Demonic Front Babylonia
*Keep Your Hands Off Eizouken!
*Room Camp (TV and OVA)
*Seton Acadmey: Join the Pack!
*Chihayafuru 3

*Blade of the Immortal (2019)
*Somali and the Forest Spirit
*The Case Files of Jeweler Richard
*Yatogame-chan Kansatsu Nikki season 2
*If My Favorite Pop Idol Made it to the Budokan, I Would Die
*Toilet-bound Hanako-kun
*Smile Down the Runway

^Girls' Last Tour
*Magia Record

^Konosuba: God's Blessing in This Wonderful World season 2 (TV and OVA)
^Cells at Work!
^One Punch Man season 2

*My Hero Academia season 4
^And You Thought There was Never a Girl Online?
*Dropkick on My Devil! Dash (TV and OVA)
^Hakumei and Mikochi (TV and OVA)
Hi Score Girl II
^Girls und Panzer (TV, Specials, and Anzio OVA)
*7 Seeds 2nd Season
^Demon Slayer: Kimetsu no Yaiba (21-26): A+
*Drifting Dragons

*BNA: Brand New Animal
^Mob Psycho 100 II
Honey and Clover
Honey and Clover II
Pokemon Sun and Moon
^Mobile Suit Gundam 00

So, I Can't Play H!
Mobile Suit Gundam 00 Season 2
Medaka Box

*The 8th Son? Are You Kidding Me?
*Sakura Wars the Animation
*Wave, Listen to Me

*My Next Life as a Villainess: All Routes Lead to Doom
*Sing "Yesterday" for Me
*Ascendance of a Bookworm Season 2
*Tower of God
*The House Spirit Tatami-chan
*Kaguya-sama: Love is War Season 2

^The Rising of the Shield Hero
*Shachibato: President, It's Time for Battle
*Princess Connect Re:Dive!: C+

Medaka Box Abnormal
City Hunter
Monochrome Factor

^Waiting in the Summer (TV and OVA)
*Japan Sinks 2020
Kampfer (TV and fur die Liebe OVA)
^Neon Genesis Evangelion
^Attack on Titan Season 3
^Senryu Girl
^Steins;Gate 0
^My Hero Academia season 3
*The Seven Deadly Sins: Wrath of the Gods
*Aggressive Retsuko season 3
Galaxy Angel
^Kemono Friends
Galaxy Angel Z

*Lapis Re:LiGHTs
*Sword Art Online: Alicization
*Fruits Basket 2nd Season
*Baki 2nd Season
*Diary of Our Days at the Breakwater

^Tada Never Falls in Love
*The Millionaire Detective Balance:Unlimited
*My Teen Romantic Comedy Snafu Climax!
*No Guns Life

^She and Her Cat: Everything Flows
*Uzaki-chan Wants to Hang Out
*Food Wars! The Fifth Plate
*The Misfit of Demon King Academy
*Monster Girl Doctor
*God of High School

*Great Pretender
*Dragon's Dogma
City Hunter 2

^Goblin Slayer (1-12)
JoJo's Bizarre Adventure: Golden Wind
Galaxy Angel Season 3 (A and AA)

*Welcome to Japari Park
^When Supernatural Battles Became Commonplace
Frankenstein Family
^Utawarerumono: The False Faces
^Love Stage
*A Certain Scientific Railgun T

^Magic Knight Rayearth
City Hunter 3
Galaxy Angel X

^Magic Knight Rayearth II
*Fire Force 2nd Season
^Heavy Object
*Wandering Witch: The Journey of Elaina
*Is It Wrong to Try and Pick Up Girls in a Dungeon? III

*Tonikawa: Over the Moon For You
*Rail Romanesque
*Haikyu! To the Top!
*The Gymnastics Samurai
*By the Grace of the Gods

*Golden Kamuy Season 3
*Sleepy Princess in the Demon Castle
*One Room Season 3
*Kuma Kuma Kuma Bear
*Our Last Crusade or the Start of a New World
*Strike Witches: Road to Berlin
*Akudama Drive
*Grand Blues!
*Adachi and Shimamura

Maria Holic
*Is the Order a Rabbit? Bloom
*Warlords of Sigrdrifa
*The Day I Became a God
*The Irregular at Magic High School: Visitor Arc
City Hunter 91
*A3! Season Autumn and Winter
Galaxy Angel Rune
*Magatsu Wahrheit: Zuerst
Show by Rock!! Mashumairesh

^Violet Evergarden (TV and OVA)
*Cute Executive Officer
Freezing (TV and specials)

Attack on Titan: Final Season (1-4) [Winter 2021 title]
*Higurashi: When They Cry Gou (1-13)
*Jujutsu Kaisen (1-13)
*Moriarty the Patriot (1-11)
*Yashahime: Princess Half-Demon (1-13)
*With a Dog and a Cat, Everyday is Fun (1-13)

Future Card Buddyfight Ace (1-22)
Ghost in the Shell: SAC_2045 (1-12)
Naruto Shippuden (251-295)
One Piece (574-628)

Movies and OVAs
Bodacious Space Pirates: Abyss of Hyperspace
Granblue Fantasy Season 2 OVA
Psycho-Pass 3: First Inspector
Violet Evergarden: Eternity and the Auto Memory Doll
Girls und Panzer der Film

^Rascal Does not Dream of Dreaming Girl
Made in Abyss: Journey's Dawn
Made in Abyss: Wandering Twilight

Re:Zero: Starting Life in Another World: The Frozen Bonds
The Irregular at Magic High School: The Girl Who Calls the Stars

One Piece: Stampede
A Whisker Away
Mobile Suit Gundam 00 Special Edition (Movies 1-3)

Mobile Suit Gundam 00 The Movie: A Wakening of the Trailblazer
Liz and the Blue Bird
Neon Genesis Evangelion
Goblin Slayer: Goblin's Crown
Neon Genesis Evangelion: Death True^2 (movie)
^End of Evangelion

My Hero Academia: Make It! Do-or-Die Survival Training OVA
Oresuki OVA

Children of the Sea
Code Geass: Lelouch of the Rebellion movies (movies 1-3)
22/7: 8+3=? OVA

Eiken OVA
Burn the Witch
Strike Witches the Movie
Dorohedoro OVA

Tales of Crestoria Special
Naruto: Blood Prison

That Time I Got Reincarnated as a Slime OAD
Kaiju Girls Black

Little Busters! EX Special
Kase-san and Morning Glories

Dropped/On Hold
Not worth mentioning with no Not Top 10 list coming.