Re: Top 100 lists, once you get outside the top 50, the margins become pretty thin. I forget who I saw say this, but there isn't a ton of difference in value between being ranked 50 and being ranked 150. Just looking at some Orioles, Coby Mayo was 36 on FGs, 69 on Baseball Prospectus, and unranked on the other major lists. Kjerstad was 80 on MLB's list and unranked everywhere else. Are those guys "Top 100" prospects? Heck, Cowser was ranked around 40 by most publications but completely left off by Keith Law and FGs.
The lists are nice barometers for the level of buzz around some guys (and most importantly, nice content for us fans to consume and argue about before the regular season kicks off), but outside of the guys that are universally regarded as blue chip prospects, I wouldn't take them too seriously.