There isn't necessarily a specific order. We're Irish Outland being processed at London VO and it went as follows:
AOR
SA
Sched A Request, Police Check Request, Med Request (all in 24h window)
About three business days for these to be added to application at CPC Mississauga, then Residency went to in process (which indicates transfer to VO)
Got LVO letter
Within a few days another update that the file had been opened and in process at LVO.