MLB Pipeline has an updated top 100 prospect list out, and your Texas Rangers currently have six players who are on the list.
Jack Leiter and Josh Jung still are the top two Rangers on the list, at 18 and 32, and it would seem to be a safe bet that whoever the Rangers take at #3 in the draft in a week or two will join them in the top 50.
Ezequiel Duran and Justin Foscue are just outside the top fifty, with Duran checking in at #58 and Foscue at #63.