https://n.rivals.com/prospect_rankings/rivals150/2019
3 in the top 75. 6 in the top 150.
Look at states like FL, TX, CA, OH, VA, NC, TN, OH, etc.
just perusing it, I don't see OH, VA, NC or TN being appreciably better. I live in NC and I can tell you this is an unusual year for top 150 kids here... IN is usually higher. Memphis is always a hotbed, but I think this is an unusual year for that area too. I don't think VA or TN have more kids, even in the year you reference. Plus most of the IN kids grew up in IN. Take away the VA prep schools and they aren't even in the discussion, even with the areas around DC. FL also has most of their top prospects at prep schools and is a much larger state. The bottom line is IN produces more than it's share of talent, and is a top recruiting state, regardless of size and even more so per capita.