Its been a while since someone has done something like this. The last list that has been made was in 2018 July by Xeron. It can be found >Here<.

This list serves as a reference point, and comparison to the PMC of 3 years 7 months ago O_O im getting old.

Im gonna try to include as many crews as I can (I’m NOT gonna mention every crew in existence or 2 hour old deckhand crews).
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Here are the rules / key points (similar to Xeron’s and Paul’s original list)

1. This is based off data from the 17th of February. It is entirely
possible that people have changed crews, come back from inactivity, or founded
new crews in the meantime.
2. “Active Players” count as any players that were active in the
last 30 days.
3. Some crew descriptions from the previous list have been carried forward,
asl ong as they are still relevant and/or the exact same crew.
4. I tried to avoid 1 – 2 man crews and will only be including those that
are worth of mention.
5. The crew names are spelt as they are in-game. including typos and
spacing issues.
6. If I forget any crews feel free to message me on Discord! #Tulips4681 or
beneath this post
7. Honorable mentions are people that are well known and have been active recently.
____________________________________________________________________________________________________________________________________
The List of Active Crews 

The Shadow Realm (SDHW)
Description : From the depths of the darkest shadows (ESE), we are
the power lurking in the darkness.
Leaders : Ae0n, TobySF, LordArth2021
Honorable Mentions : Viper1093, Fatherfrog616, MrLimeWise, MsLimeWise, Crimpybark, Folsky
Type : Recruiting / Economy

Republic of Promethea (RoP)
Description : I am Promethea. I have the high ground. I support the droid attack on the Wookies. Gonk gonk gonk.
Leaders : LEG𝙾, Coldat, khaiethan.
Honorable Mentions : CrazyMoneyy, Pjeturr, DeimosWreck, YellowTheMaster
Type : Economy / Build / PvP / Retirement Home

British Empire (BE)
Description : The British Empire is a long-standing Empire, with a
tradition rich history. Who are based on a democratic System.
Leaders : BGraph, lazydog11, CrazyPirate1, gildor_stinky, ItsCrazyDave, mdsegebre.
Honorable Mentions : MrMadBurrito, RatRaceRobot, Thederpymaster, Fat_Platapus, PanOfSteel
Type :Recruiting / Economy / Build / PvP

Valyrian Freehold (VAL)
Description : A crew run by experienced players, based on GoT. Also
the PMC retirement home.
Leaders : Mqstic, Atalantaa, EnderSalt, Solembus13, CreatingWithKass
Honorable Mentions : Bazurka, Taulov, Skyraine, Nado994, claymaester, EisenGraf, PandamoniumPrime, Masondave, _Tywin. malexdog, Janick_, BadBrando, SpikyCactus_, 
Type : Economy / Build

Cove (Cove)
Description : The overlords!
Leaders : GodsDead
Type : World Domination

JunglePirates (JP)
Description : No description
Leaders : JunglePirateDave
Type : Recruiting / Economy

Polish Kingdom (PLK)
Description : The Polish Kingdom is a mostly peaceful crew,
focusing mostly on exploration of the new 1.18 lands.
Leaders : Tujek, Tulipss
Honorable Mentions : toni907
Type : Recruiting / Economy / Build / PvP

Sinister (Sin)
Description : Seclusion brings madness
Leaders : Frqstie, DeoFiloW1, Espul
Honorable Mentions : oWig, _knoedel, IgnFry
Type : PvP

CosaNostra (CSN)
Description : set Ch’ a cousta lon ch’a cousta Viva l’Acusta
Leaders : RoMich02, WaterPool, Murubutu, Caldera23, Armqndo
Honorable Mentions : gepetrus, mikimoosey, Naqvity, CowTheMeek, Minemoppel, Slowmotionturbo, Ismaworkx, Lullaby93, SpiderDeluxe, Vec0203.MinisterMoo.
Type : Economy / Build / PvP

La Familia (Mafia)
Description : and THAT’s how mafia works
Leaders : Simbud, Monkss, Nationalistic, DaddyVolpex, NoSoulz,
Crucco
Honorable Mentions : Kirn_
Type :  Economy / PvP / Retirement Home

Chinese Communist Party (CCP)
Description : If you join you get free +15 Social Credit
Leaders : N0tMAD, notgodsdead
Honorable Mentions : FatMatt176
Type :  Recruiting / Economy / Build / PvP 

The New Empire (TNE)
Description : We are a big autonum Crew, with the will, to build
the biggest, and most beautiful city on the server.
Leaders : ScriptX, Two_Com, IndexOutOfMJ
Honorable Mentions :
Type :  Economy / BUILD

The Verussian Republic (VER) (yes it still exists ikr)
Description : A republic for the people – by the people. Verussia
is governed by an elite council, and enforced by the Krimzon Guard.
Leaders : warbluke, KwesiYsell, InventorElric, PortugalJ
Honorable Mentions : JonahHulk10, ExperienceMoore
Type :  Recruiting / Build

The Church (TC)
Description : We The Church Live to Serve you the people of the
world!
Leaders : FatherAnderson, FugalCoast95003
Honorable Mentions : RexStrafes, Kooksuba
Type : Build

Rome (SPQR)
Description : SPQR is a Roman themed crew that focuses on building
in Roman style and roleplay.
Leaders : _Augustus_Caesar, duckmasterizzy
Honorable Mentions : missioncarp3127, _Scipio_, CottageSimcoe, TulipGX
Type :  Economy / Build

The Imperial Roman Empire (ROME)
Description : into cosmic’s basement we go
Leaders : CommanderAsher, CosmicKingSimp, Gqldn, Majsay23, Oski8164
Honorable Mentions : MionaTheGreat, lukaim
Type :  Economy / Build

The Papal State (Papal)
Description : If you have a problem, if no one else can help, and if you
can find them… maybe you can hire Papal.
Leaders : Olveron, DrBipper, _Ninja_8
Honorable Mentions : I_Sell_Hugs, OTheMan, ContDJ, DarkMatter51, Icyvains
Type :  Economy / Build

The Woo (WOO)
Description : No Description
Leaders : IronAR
Type :  Economy / Build / PvP

PS : Thanks Taulov for fixing all the bugs in this post!