The other option is to look it up by keywords. They have one for electronic seller, they have some for woodworking, there really isn’t one that fits perfectly. There are tax implications to certain fields, but mostly those have target audiences of over 18 years old. Usually you’ll know which ones because they will specifically question you on those when you are filing your form.
I have a few friends who are CPA’s and handle business accounting, I can ask them their process, but I’m going to assume it’s pretty much exactly what I do, which is narrowing down by keyword and trying to find the closest match (this is how I was taught when I got my tax prep license and took my accounting classes). FYI, I’m not a busines accountant, so this is by no means legal or financial advice 