I don't see how anyone could have any other guys in their top-10 if they're paying attention. I think the only thing Martinez is missing right now to be 4th/5th is a bigger track record.
You are missing my under the radar guy Barger in the top-30, but I'll allow it
The only guy in my top 10 that I wasn't sure where to place was Beltre. No full season results, no results this year. The very pessimistic report from fangraphs that his tools didn't look good this spring. Wouldn't surprise me if he was not in the top 20 a year from now
If someone told me Barger was a top 15 prospect 2 years from now I wouldn't be shocked, but 22 years old in A+ striking out over 30% of the time and not walking much is a concern. Ideally you'd either like to see a guy crush a league in a smaller sample, have a couple years of good reasons(wRC+ of 120, 130 isn't bad but with that K rate still scares me), have a solid year at a very young age, or has decent results with pedigree(high pick, big bonus). He was for sure on the outskirts with some other guys I like but couldn't fit.
I think Britton at 30 is one of my faves. Weird catchers/outfielder combo, same name as the relief pitcher. Pretty good walk rate. Him and Barger have pretty similar results TBH.