The way I see it, this is the 2020 Angels Pitching Staff:
MLB Rotation:
#1 Free Agent, #2 Heaney, #3 Trade, #4 Ohtani - these guys are locked in as everyday, traditional starters, with the exception of Ohtani, who stays on a once-a-week schedule
#5 rotating from Groups A/B, #6 from Groups A/B
MLB High-Lev Bullpen:
#1 Robles, #2 Bedrosian - these guys are out of options, and will be locked into the pen
#3 Buttrey, #4 Anderson, #5 Middleton - these guys all have options, and I expect all three to be in the pen all year, but one might occasionally be optioned if they're being overused or there's a need for fresh arms
GROUP A: AAA Rotation
SP prospects who might have inning limits, health concerns, limited upside (future #4th-5th SP at best), or little-to-no MLB experience
Griffin Canning, Jaime Barria, Jose Suarez, Patrick Sandoval, Dillon Peters, Nick Tropeano, Luis Madero - all of these guys have options and can be shuttled back and forth from SLC/Anaheim/bullpen as needed
Eventually, one or two of these guys (Canning) will establish themselves as a legit MLB starter and ascend into that first tier with Heaney, Ohtani, and the two acquisitions, cutting us down to only rotating through the #6 slot*
*Health permitting.
GROUP B: MLB Bulk Bullpen
all of these guys are stretched out to throw multiple innings/start games. Only one has options, so they're all stuck in the pen or off the team.
Adalberto Mejia, Felix Pena, J.C. Ramirez, Noe Ramirez, and Taylor Cole (the only arm with options)
These guys are sort of on the bubble - they're the first ones to be pushed off roster should better options emerge due to their out-of-options status*
NOTE: Cole has options, keeping him safe, and Pena arguably is as close as Canning in ascending to a permanent rotation slot.
They will eventually be replaced by failed SPs from Group A or new players from Group C.
GROUP C : AA Rotation or AAA Bulk Bullpen
Jeremy Beasley, Andrew Wantz, Jesus Castillo, Kyle Bradish, Adrian De Horta**, Oliver Ortega** - these guys will in 2020-2021 graduate up to Group A, fill displaced/DFAed pitchers from Group B, or 'flop'' and become Group D
**Ortega and De Horta are both R5 eligible and will need to be added to the 40-man, and would then have options
They might not be MLB-ready or have long-term stuff to play as SPs, but they should be able to give the Angels 2-4 innings every 2-4 days, sort of a Yusmeiro Petit/Noe Ramirez role, and can do so as soon as 2020 while they're still developing
GROUP D : AAA Traditional Relievers
These guys have options and can be the 'in-between' arm' that is called up when one SP is sent back after a start (#5), is a fresh arm for a day or two, and is sent back for a new SP (#6)
Luke Bard, Jake Jewell, Adam McCreery, Jeremy Rhoades**, Luis Pena**
Bailey was also pretty solid in his first Oakland start btw.
It was against Seattle. So, he was good against a bad team, and bad against a good team. About what you’d expect.