We can't agree on what a #1, #2, #3, #4 and #5 are on this site, and then we all have different ideas on what numbers are more important than others, so asking us to place out pitchers into these categories is bound to get wild fluctuation.
My methodology is to say you are a number one, if you are a top 30 pitcher in many of the stats that matter to me: ERA-/ERA+, fWAR more than bWAR, FIP and maybe K-BB%. (WAR factors in IP alot, so I don't need that included. A Number two is 31-60, #3 61-90 and so on...
What I think is interesting about our SP'er ratings is than so many have pretty high ceilings. One could argue many have low floors, too. The pitchers we have with significant experience have already shown they can pitch well for a season or two, but again, almost all have a bad season or two, as well. Determining their ceiling could be just saying they can repeat their bast year. Only Gray is old enough to say that is unreasonable to expect or even hope for.
Here is my floor-ceiling ratings for our SP'ers.
High 1- Mid 1 Crochet
Mid 2- mid 4 Gray
Low 2- high 4 Bello
High 3- low 4 Sandoval (Had a 3.7 fWAR in '22 & 2.3 in '23)
High 3-mid/low 5 Crawford (2.4 in '23 not fully a SP)
Mid 3- low 5 Harrison
Mid 3- low 5 Dobbins
Low 3- low 6 Criswell
Mid 2-???? Early
Mid 2-???? Tolle
Mid 3-???? Perales