I fear rthat you will need to be patient and wait for flowers.
As far as I know all Hydrangea macrophylla leaves are the same./similar
The difference is the colour of the flowers .
https://www.google.com/search?...
Your leaf appears to be soft, hairy , with hairs on the edges.
This would rule out Hydrangea macrophylla.
It would not rule out other Hydrangea sp.