To be awkward the EU, China, and Tesla each wanted to set their own standards: Their only common goal was to be different to Type 1, which has resulted in different types of Type 2 plugs (EU and China look physically the same but the pin-outs and ratings and compatibilities are different, and Tesla has proprietary standards with Type 2 adapters).
EU needed three-phase AC support, so that means that anything based on Type 1 or Tesla's proprietary North American connector was out (not enough pins in the connector).
China's GB-T wasn't ratified at the time, so Mennekes Type 2 it was ,and hence Type 2 CCS.
There were a number of Smart cars produced that had the reverse-gender GB-T style connector produced, before the Type 2 connector was standardised.
GB-T AC connector is a reverse-gender
of Type 2, but yes, they have the different signalling as well as the standard pilot signalling, so their equivalent of Plug & Charge is a thing.
For DC, GB-T has a lot of similarities with Chademo, and as such the next version Chaoji, aka Chademo 3.0 will be the same, and older vehicles will need adapters because the connector design is different.
Think yourself fortunate you're not in Columbia, where some
of the charging networks have decided that for DC charging it should be Type 1 CCS, or Chademo, but AC charging should be Type 2 tethered. That doesn't make sense.
New Zealand and Australia went through the confusion before their governments set standards, because a lot of vehicles in those countries are grey market imports. Now they're Type 2 / CCS as default. BMW did a free retrofit of vehicles they had imported when they had assumed that Type 1 was going to be standard in NZ, and this made life easier for the public charging networks (for a small inconvenience of retrofitting some older charge points with type 2 CCS connectors)
Africa is Type 2, with a smattering of GB-T for chinese imports.
South America is mostly Type 2, with a smattering of GB-T for chinese imports for things like buses.
Indonesia and Malaysia is Type 2.
Middle east is Type 2, except for Jordan, which doesn't seem to have a standard.
Type 1 is only actually officially declared as required standards in North America, Japan and South Korea. The rest of the world is Type 2-based, or GB-T, or if you're in India... Good luck... There's even more standards to choose from there for charging electric rickshaws etc, but the normal-size cars are Type 2 / CCS, or GB-T.
Japan has Type 1 / Chademo, North America has Type 1 / CCS.
Ukraine had no defined national standard, so the public charging stations there are a bit unweildy having way too many connector variants. What will happen after the dust settles remains to be seen, but they're more likely to align to the EU standards given that they've put in an application to join.