@pk: Sure, thank you for asking.
I came to the US in September 2018, although visited for a couple of months on J1 visa in 2015, 2016 and 2017.
The fellowship is from Switzerland, but my citizenship is Serbian. So, the fellowship is not from the country of my citizenship.
Regarding the type of J1 visa, my DS2019 says "Research scholar".
Best regards,
