What does "among other donors" in the last sentence mean? Does it mean "there are other donors which also make great increases" or "among the donors except the three largest donors"?

The three largest donors continue to be the US, Germany and the
UK. These countries accounted for 52% of all government contributions, although
contributions from all three decreased in 2018. Among other donors, substantial
increases were made by the United Arab Emirates and Saudi Arabia, providing an
additional US$1.7 billion (567% rise) and US$806 million (173% rise) in 2018, respectively.

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.