You're likely going to see lots of different call makers names come up in the answers to your question. Theyre almost certainly all great calls that will be great to learn on. I think theres a lot if nuance and personal preference in each persons answer. The only way to find out for yourself is to get them in your hands and play them! To make things more complicated, your preferences will probably change as you learn, get better and evolve as a player. My advice is to get one that you like the looks of and play the crap out of it.
That said, I'm still gonna shout of a few guys that have been good to me, and make awesome calls. Greg Gwaltney, Gene Shoemaker (DES), Brian Mero, Daryl Slaton.
Good luck, have fun!
Sent from my SM-S926U using Tapatalk