@Gearoid -
I’m not aware of any template which uses all the key features of Miro, especially as many of those relate to integrations or add-ins which might not be part of a template, but you can check out Miroverse to see which boards have the richest content: Miroverse | Miro Community Templates Gallery
Kiron
@Gearoid Here are some of my favorite templates from Miroverse that can help you onboard new people:
@David Read’s Miro Orientation Template: https://miro.com/miroverse/miro-orientation/
@Matt Stocker’s Getting to grips with Miro: https://miro.com/miroverse/getting-to-grips-with-miro/
Kim Howe’s Welcome to Miro: https://miro.com/miroverse/welcome-to-miro/
@Robert Johnson Getting to Know Miro: https://miro.com/miroverse/getting-to-know-miro/
Thanks for the shoutout, @Anna Savina. It looks like I am going to have to make some significant updates to my template given the recent UI changes 
Thanks for the shoutout, @Anna Savina. It looks like I am going to have to make some significant updates to my template given the recent UI changes 
Ditto. Thanks for the shout out @Anna Savina.
We’ll also need to schedule in some time to update our own template too . Love the improvements to Miro but I do think @Robert Johnson and I need paying in cupcakes please for the resulting work (gluten free for me please).
I’m sure your internal content/training creators love you too every time you make these kind of changes ;-)
@Gearoid just noticed we have a new template for introducing Miro to your team: https://miro.com/miroverse/miro-communications-kit-rqxo2ti6slhv3ddy/ Hope this can be helpful!