As an AI language model, I don’t have information about the date and time to consider the latest initiatives of these countries. However, I can provide you a list of ten countries that have previously implemented successful initiatives promoting sustainable and energy-efficient healthcare buildings.

1. Singapore
2. Australia
3. Germany
4. Denmark
5. Canada
6. Sweden
7. Norway
8. UK
9. The Netherlands
10. USA

Note: This list is not exhaustive, and there may be other countries that have implemented successful initiatives.