WARNING:
IF YOU ARE ANYWHERE OTHER THAN COMPLETELY ALONE, ALL OF THIS MUSIC & VIDEO SHOULD PROLLY BE CONSIDERED BLATANTLY DISGUSTING AND OFFENSIVE!
SOMETIMES WORDS AND SENTIMENTS ARE CLEARLY ENUNCIATED THAT SHOULD PROLLY NOT BE BLASTED THROUGH A WORKPLACE OR, SAY, A CHILDREN’S PLAYGROUND!
SOMETIMES VIOLENT AND/OR PORNOGRAPHIC IMAGERY MAY BE DISPLAYED!
I DON’T WANT TO HAVE TO SPOILER THE ENTIRE POST OR BE BLAMED FOR THE POSSIBLY-DISAPPROVING LOOKS ON THE FACES OF PEOPLE NEAR YOU, EH!
Early grindcore. Bands that still perform this style are now sometimes referred to as classic grindcore or old school grindcore.
Bolt Thrower - In Battle There Is No Law - the whole 30 minute demo album
Napalm Death - Scum - This is the whole 33 minute album. You can prolly hear the S.O.D. influence clear as day there, I know I can.
With both of these albums, IMO the limitations of the studio equipment and the people behind the boards are both extremely detrimental to the presentation of this music; thank Og that live shows abounded and perceptive ears were everywhere.
Anal Cunt - Everyone Should Be Killed - 58 tracks with an average length of about a minute; it’s a long and largely unvaried ride. The fact that there are variations seems to somehow add to both the seriousness and the humor of the music, tho, IMO.
Assück - Anticapital - IMO the first political grind band; this album was a big deal.
Magrudergrind - Magrudergrind - modern political grind, this is their 2009 album (all 23 minutes/17 songs of it)
The band that IMO showed us all what that template made possible:
Cephalic Carnage - Exploiting Dysfunction
Then there’s death grind:
Pig Destroyer - Gravedancer - I should note that this band has grown and changed quite a bit since this song was recorded. For instance, they just added a bass player.
Benighted - Carnivore Sublime - playlist of the whole album by this French outfit is about 38 minutes. On this album you can hear some of the demon pig squeal vocals that are now a prominent part of grindcore (not presented as a historical example or anything, just noting that they’re there; this is their 2014 album after all).
You can immediately hear that the songs are much more complex than classic grind, as you’d expect from melding death metal with grindcore.
Goregrind:
Exhumed - Anatomy Is Destiny
Gutslit - Amputheatre - one of my 10 best listens from 2017, this band from India significantly upped the ante from their raw-but-fun debut.
Death grind/pornogrind:
Grind Of The Dead - Pussy Jamz
Pornogrind:
Rompeprop - Gargle Cummics
Teen Pussy Fuckers - Just Some Pornstars - serious pig vocals here
Teen Pussy Fuckers - Pigtails
Vaginal Penetration Of An Amelus With A Musty Carrot - Eyeball Peeler - you can prolly see why this band’s name is often abbreviated. Amazing pig and frog vocals tho.
Vaginal Penetration Of An Amelus With A Musty Carrot - Embryo’s Orgasm - very not safe for work video;
Note that lyrically pornogrind isn’t like watching porn set to grindcore. It’s often misogynistc as hell, sometimes disturbingly so even when presented as “joke-y”.
Groovy grindcore kind of combines a lot of those influences but emphasizes having some kind of actual headbang-able parts. Lyrical content runs the gamut from smut to gore to scat and more.
Piggy - Porcogore (14 tracks, 27 minutes) - a fav from last year
Grindzilla - Toshinquandon (15 songs, 32 minutes) - a fav from this year
Gutalax - Shit Happens - yes, every song is about feces; what else would you expect from a band named after a laxative? These guys put on brilliant live shows and are a favorite at OEF.
And here’s some more recent stuff just cause I like it:
Sewage Grinder - Solid Waste - 39 songs of crusty grindcore in 20 minutes
Brutal Sphincter - Analhu Akbar - deceptively named band; this brilliant 16 song, 31 minute album is 100% political in focus
Sarugutuwa - Namakubi - 12 songs, 35 minutes with some freaking amazing front-and-center snare drum work.
NAILS - Abandon All Life - okay, kind of a powerviolence/noise/grindcore outfit, I admit but they are IMO one of the most vicious, brutal bands around today, reducing everything to an incredibly loud, violent series of outbursts that happen at insane speeds. I love all 10 songs and 17 minutes of this album. It was a classic to me as soon as I heard it. 
Wow, on preview that’s an off-putting shitload of music I just linked to. Sorry about that. ;)
Take your time, eh.