My top 6 according to how podcast addict sorts them:

8-4 Play

The Adventure Zone

Brad and Will Made a Tech Pod

538 Politics

Hardcore Gaming 101

Rude Tales of Magic

I'd probably also give shout outs to Self Hosted, Common Descent, Spacepod, the Nature podcast, and Software Engineering Radio.

Mean Boys, F**kFace, Smart enough to know better, Midflight brawl, No such thing as fish

Nextlander, it's some of the OG Giant Bomb guys, I love their video games and industry coverage, and they're such warm comforting guys :-)

"If you're listening" is anazing, but I have always loved "The Science Show" the best. Both on ABC.

For non-Aussie podcasts, 99% invisible I guess.

• Spout Lore - the best real play RPG podcast
• Last Podcast on the Left - True Crime, aliens, and cryptids.
• Marvel By The Month - every Marvel comic, one month at a time
• Blank Check - The best movie podcast
• The Flop House - the best bad movie podcast
• Depresh Mode - Mental health, also the best named podcast in history
• No Dogs In Space - alternative music history
• Sawbones - Medical history, also relationship goals
• Till Death Do Us Blart - the eternal podcast
• Improvised Star Trek - Sadly ended but still hilarious

Tech:

• Fedora Podcast
• Linux user space
• Linux Experiment (simply more content than the videos)
• Thundercast
• Sudo show

German

• Deutschlandfunk Nova Hörsaal
• Chaosradio
• Set & Setting (Jascha Renner)
• Das ist Netzpolitik
• off/on Netzpolitik
• Lage der Nation

I enjoy Adam Ragusea's podcast. It is a bit all over the place sometimes, but it's mostly about cooking related stuff?

French speakers should check out Mike Ward sous écoute. It's just Québec comedians* getting drunk in front of a crowd. I really enjoy it.

Darknet diaries have been named a few times already, but I will also list it, it's just that good haha.

* Google tells me humorist is a word in english but im not sure? It's mostly people doing comedy, not necessarily movies etc.

A locally made one here in Australia - How Other Dads Dad, by Hamish Blake.

The Weekly Planet. Two funny and liberal Aussie guys talk about comics, movies, and TV shows. Mostly the former two. They have a great YouTube channel too.

Usually those two:
WANshow from the LinusTechTips team
Darknet Diaries by Jack Rhysider

The Delta Flyers is a great Star Trek podcast about Star Trek: Voyager and more now that they have finished their re-watch of the series.

Mostly industry / work related stuff honestly.

The Kubernetes Podcast from Google

DevOps Paradox

DevOps and Docker Talk

To keep up with the crazies

• Knowledge Fight
• QAnon anonymous
• Cognitive Dissonance

For all my SCP needs

• The Exploring Series
• SCP Archive
• The SCP Experience

Creepy podcasts doing their own thing

• Welcome to Night Vale
• The Magnus Archieves
• The Hotel

• Sticky Notes: The Classical Music Podcast
• The psychology of your 20s.
• Talks at Google
• What should I read next?
• Lex Fridman

A bit more teckie:

• REWORK
• The Changelog
• Go Time
• Screaming in the cloud
• The New Stack podcast
• Ship it!

Languages learning:

• Tanaka radio (Japanese)
• The Miku real Japanese
• The real Japanese podcast
• The procrastination podcast (English)

Tooth and Claw! I haven't seen that mentioned. Awesome podcast about animal attacks and animal facts

Dear Hank and John (funny John and Hank Green)

Hardcore History with Dan Carlin

The Debaters (Canadian comedy show where two comedians debate whether something (ex: malls, big weddings, etc) is good/bad and get judged by live audience)

• check out the pretzels vs peanuts episode

The Unmade Podcast (https://unmade.fm/) is probably my GOAT. Brady Haran (from Numberphile, Computerphile, etc.) and his Childhood friend, Tim Hein, come up with wacky ideas for podcasts that they won't actually make. Definitely the funniest podcast I've ever heard.

Hello Internet, also from Brady, with CGP Grey, is also amazing. Though sadly on hiatus.