In keeping with ldodds post for a Google Slide Template... I give you an Affinity Designer Template for anyone who is using Affinity Designer. There are two formats, a regularly saved Affinity Designer file and the template file.
Please let me know if there are any changes that need to be made to the template. The template uses Arial as the default font so it should be universal for everyone without having some wacky font that only I might have :D