Here's the latest variant picture for the "Global - Other" countries, to late May.
The NB.1.8.1 "Nimbus" variant rose as high as 56%, but fell back in later samples to 37%.
The XFG.* "Stratus" variant is the next challenger, growing to 28%.
This perspective excludes all the high-volume countries and regions that I routinely report on: Australia, NZ, Europe, Canada and the US. The remaining countries are aggregated into this report.