So you intend to produce a Knowledge Organiser but you are wondering if anyone has already produced one.
It would be so much easier to use one that has already been made. Perhaps you could adapt an existing one.
Why not ask here if anyone has a Knowledge Organiser suitable for your needs.
Just reply below and state the topic and age group for the Knowledge Organiser. You may get an offer or a link to one.
Let's share the knowledge!
The other place to make and answer requests is the Shoutbox