Patra – BrandBook Powerpoint Template
https://elements.envato.com/patra-brandbook-powerpoint-template-JC5SEAH
Free 
Verse – Brandbook Powerpoint Template
https://elements.envato.com/verse-brandbook-powerpoint-template-CKG6D2K
Free 
Verse – Brandbook Google Slides Template
https://elements.envato.com/verse-brandbook-google-slides-template-N52JWXC
Free