I created a new Bobs/Angels game with this mod - the vanilla items (ores and carbon etc.) work as stated. However the Bob's specific ores still maintain the old Deadlocks behavior for stack size. Are there any plans to add these to the functionality?

I still consider it weird that it doesn't work for every mod in existence automatically, it's the intention anyway. I can temporarily add it BA to optional dependency too after i see which modnames are for ores.

Oh didn't you mean all intermediates too or was it working for those?

Oh right, i was thinking too complicated. This mod isn't supporting Bob's or Angels directly but it will alter a mod that gives those 2 mods DL Stacking compatibility. I selected 2 from the mod portal for that:
https://mods.factorio.com/mod/DeadlockStackingForBobs
https://mods.factorio.com/mod/DeadlockStackingForAngels

Updating in a sec since this looks working ingame.

Thank you - both for the mod and the excellent response time! It seems to work now :)