You should share your template with anyone involved in your team’s onboarding process. You can also share your template across teams to create a standardized experience for all new employees at your company.
It’s also a good idea to share a rough idea of your 30-60-90 day plan with potential candidates during job interviews. Having a plan already in place helps hiring managers and recruiters paint a concrete picture for candidates, so they can get an accurate idea of what the first few months of a role will be like.