It's always worthwhile looking at other countries. The countries you mention have all learned from Canada. We were really at the forefront of improving standards of ethics in politics, beginning in the late 1980s, but those countries have sometimes made advances beyond where we are.
I know that ethics commissioners, including your Conflict of Interest and Ethics Commissioner, have their own networks. In addition to looking at best practices from one another, they look at other countries, and they often have speakers from other countries talking about this.
Yes, it is worthwhile keeping abreast of this.