Lots to consider from frame to finish in terms of materials and connection to main structure. The boys agreed that--for bulk water management--attaching the deck ledger to the main structure should be done either for lateral stability only or with the ledger spaced out from the main structure.
Pete's Resource(s):
1. FPL Deck Guide: https://www.fpl.fs.usda.gov/documnts/pdf1997/falk97d.pdf (dated, yes, but seminal and it's written by an FPL great: BoB Falk)
2. AWC Residential Wood Deck Design - https://awc.org/wp-content/uploads/2021/12/StructureMag-DCA62012-StructuralSpecifications-1704.pdf
3. BSC Information Sheet 304 - Integrating Deck Ledger Board with Drainage Plane - https://buildingscience.com/documents/information-sheets/integrating-deck-ledger-board-with-drainage-plane