Since the latest update came out a few days ago that heavely nerfs big alliances, big alliances like the IB, BEER and OU decided to split up into smaller alliances, which may seem overwhelming. So I decided, after the dust has mostly settled, to make an Alliance guide so that it might seem a bit less overwhelming. We'll go over every single large enough alliance in order from the most populas to the least, but first:
Here is the current leaderboard in terms of population:


Note, this might change a bit in the future, depending if there will be any major changes
And here is the map:
EUROPE

AFRICA AND THE MIDDLE EAST

ASIA AND AUSTRALIA

SOUTH AMERICA

NORTH AMERICA

https://app.warera.io/alliance/6a2b13879c8c99640b9c4963

B.A.N.G alliance is the direct successor of the former BEER alliance. They currently consist of, most notably, Germany, United Kingdom, Vatican and their proxy states. All the other remember of BEER formed their own alliances.
Region of the world: Europe, Africa
Population: 1526
Battle damage bonus: 19.67%
https://app.warera.io/alliance/6a2967acab5f82249fd8c1c3

The biggest alliance in the world, has now fallen to the second place. It still holds its holds its core member: Egypt, Lithuania, Poland, but also Denmark and Estonia have remained. The rest are their proxies. The key countries that have left this alliance are the Netherlands and Belgium. Note: Latvia might also join.
Region of the world: Baltics, Poland, Africa and Asia
Population: 1490
Battle damage bonus: full 20%
https://app.warera.io/alliance/6a2965afbc253b28fcf0d1c7

Another giant alliance that has been cut in half, now holding the third place (which it already held). A lot of countries from all over the world left this alliance Croatia, France, Argentina, Chile and Colombia which means they lost their influence in South Africa. Their current most important members are: Italy, Iraq, South Africa, Turkiye, as well as many other smaller countries and proxys.
Regions of the world: Balkans, Middle East South Africa, Mongolia
Population: 1475
Battle damage bonus: 19.85%
https://app.warera.io/alliance/6a9250a52d7987e3b737be2e

This alliance is a kind of a mix between BEER and FUDA members. You have Spain and Portugal, but also Venezuela and Brasil. You also have some of their proxys. So it is a bit of a mix here.
Regions of the world: Iberia, South America, The Caribbean, Africa
Population: 1456
Battle damage bonus: 19.63%
https://app.warera.io/alliance/6a95f16a8735ab5e1f87fd57

Another New Alliance Lads, or its rather questionable abriviation ANAL, is a successor to the IB, but also has former OU members Croatia and Kyrgizstan. It's new alliance of Netherlands and Belgium with its proxys.
Regions of the world: Europe, Carribian, Africa.
Population: 1427
Battle damage bonus: 18.67%
https://app.warera.io/alliance/6a2966e8f0f195d344d5158c

This is an alliance that has probably changed the least, if at all. Moldova has left it, but I'm not sure if it's because of the update. Main members are Serbia, Romania and Ukraine, but also includes some other smaller countries and proxys. It is the alliance with the most members currently.
Regions of the world: East Europe, Balkans, Caucas, Middle East, Africa, Bolivia.
Population: 1389
Battle damage bonus: 18.24%
https://app.warera.io/alliance/6a29edc6ee031e842c839766

Southern Maritime Defense is pretty much the same as it used to be before this update, except for one addition. Austria, which is a Europian country, joined a dominantly East Asian alliance. A bit of a weird choice if you ask me, but whatever works, works I guess.
Regions of the world: Australia, Southeast Asia,Middle East, Austria
Population: 1140
Battle damage bonus: full 20%
https://app.warera.io/alliance/6a95cd6c19dc1b1a87504d5e

Horizon is the new alliance which is a successor to OU. The main countries in this alliance are France, Argentina, Chile, US. There are also some smaller ones and proxys.
Regions of the world: France, Morroco, South America, Africa
Population: 1043
Battle damage bonus: full 20%
https://app.warera.io/alliance/6a80cb6969124c83cce08934

Forge is the alliance that was formed a little while ago by Iran and Yemen after leaving BEER. After this update, more countries joined the alliance making it a lot bigger than it was when it originally formed. The main countries are the Nordics, Iran, Yemen.
Regions of the world: Scandinavia, Middle East, Africa
Population: 836
Battle damage bonus: full 20%
https://app.warera.io/alliance/6a9622a618801a8c9c6fbb5f

Hippo unchained is yet another successor to je IB alliance. It holds its Asian members India, Philippines and Malaysia, as well as Andorra, Greenland and Belarus.
Regions of the world: Europe, Greenland, South Asia
Population: 630
Battle damage bonus: full 20%
https://app.warera.io/alliance/6a2981ad131983aa8445864d

And the Last alliance we will cover is FUdA. It was a primarily South American alliance, but then Steppes Horde joined them and now its basically Steppes Horde. The biggest member are: Russia, Uzbekistan, Mexico and more.
Regions of the world: Central America, Central Asia
Population: 324
Battle damage bonus: full 20%
OTHER ALLIANCES
There are also some smaller alliances that exist. The biggest of them would be The Emerald Accord which is currently the Irish alliance with Ireland as the sole member. Troublemakers is also a notable alliance with it having 5 members: North Korea, Czechia, Slovakia, Fiji, East Timor.
TWO BLOCS
All of these alliances form the same two blocs basically. Most likely nothing will change in their politics, except maybe more prioritization of local in alliance battles over some other battles.
That's it for this article, hope you enjoyed it!
Tipping is much appreciated!