Well, here's the thing.
Tesla sells directly to customers, there are no dealerships. So "delivered" means delivered to customers...that is, sold. In transit means exactly that - those are cars that are on trains and car carriers on their way to their new owners, but haven't been officially delivered yet. Since 11K cars are in transit as of the end of last month, it's reasonable to assume they will be delivered this quarter and probably this month.
See the fine print in their official statement:
As for numbers outside the NA market - there have been 0 Model 3s sold outside of North America. Tesla only started selling cars in Canada around May of this year, so the 2Q numbers are combined US + Canada numbers but the 1Q numbers are US only numbers. I don't think Tesla will start selling Model 3s outside NA until 2019.
I don't think it really matters what GoodCar or CleanTechnica say because ultimately...these are the official numbers. Those sites attempt to estimate sales in-between Tesla's quarterly reports but they are just that, estimates. Just look at the GoodCar numbers, they don't pass the sniff test at all. Exactly 5,000 Model 3s as of June? Exactly 1,000 cars sold in June? At least some of the other sites will correct their data once real numbers come out, I don't know why GoodCar doesn't seem to do this.
Honestly I don't know if their other numbers for other manufacturers are accurate, I mean, I would hope they get their numbers from GM. But they are definitely inaccurate for Tesla.
Also GM and Tesla "entered the arena" around the same time, as far as tax credits go. I'm not even sure the early Tesla Roadsters count because the tax credit didn't exist at that point (it looks like it started in 2010:
https://www.fueleconomy.gov/feg/taxevb.shtml). I remember hearing that that law that started the tax credit was written to make sure that the at-the-time new Chevy Volt qualified for the largest credit (it's based on battery size).
Anyway, the Volt started shipping in late 2010, and the Model S in mid 2012. Even with GM's head start and lower prices, Tesla still beat them to 200K.