I called CRA today and asked a senior agent to satisfy my curiosity. They stated that yes, all of the Federal/Provincial Medical Claim expense types, and their eligible total in a return, can be used when claiming the Ontario Seniors Care At Home Tax Credit.
This is consistent with what the TurboTax folks state above; where TurboTax simply uses all eligible medical expenses to automatically calculate the OSCAHTC.
It's only this Ontario page below in my opinion that makes it somewhat confusing (at least it was to me) - by just listing 10 bullet pointed expense types. In my opinion they shouldn't list anything; and instead just provide their link to the CRA page with all the Federal/Provincial medical expenses.
https://www.ontario.ca/page/ontario-seniors-care-home-tax-credit
