The Size Of Sample Groups
These libraries aren’t public, so you aren’t able to pick your company based on how big its genetic library is. 23andMe does, however, have much information on European populations as this is its biggest sample group.
For information on Native American populations, they do not have as much as it is one of their least sampled groups. This notion means that their library will be able to tell you precisely what Jewish group you are from but will combine Native Americans into one general category.