Reposting my layout cheat sheets since I deleted them from Reddit for good. Verified for 3.21.

Act 1:

• Upper Prison

Act 2:

• Old Fields
• Den
• Chamber of Sins level 1 (also works for act 7, only difference is that if Locomotive connects to both ↙ and ↗, you go ↙ in act 7)
• Chamber of Sins level 2
• Fellshrine
• Crypt
• Vaal Ruins

Act 3:

• Crematorium