Guess what, there are DIII players drafted every year and there are a lot of DI players that do not get drafted.....there is overlap.
It really sounds like you are either you have other motives or you are trying to have someone do all the work for you in your recruiting.
Since you are recruiting for a DIII program, I am sure you are aware that you will need to sell yourself much more that a DI, DII, or JC, since the tendency for the players to want to go to a higher level with the possibility of getting money or since many DIII are smaller schools with a higher cost of education without athletic grants.
Since you are a DIII recruiting coach you may need to know that the source you are looking for players gets more professional and DI prospects than anyone else in the business, in order for you to find someone who will do your work, you may want to contact another group which tends to charge a large amount (thousands of dollars) to play on their teams for a tournament and who’s niche is players at lower levels that will send you out recruiting information on those who sign up for their service, if you need their name I can provide that to you.