Upload restrictions – upload_mimes – filter: Adding multiple MIMEs for a single extension and adding multiple extensions for a single MIME type?

This filter only accepts strings for mime types. It also already has support for webm, mp4, mpeg, ogv, and ogg.

I think you can remove everything except the line for SVGs.

A word of warning, WordPress doesn’t support SVG upload by default because it’s a security concern. Be careful about enabling this. At the least, use something like the Safe SVG plugin to help mitigate the risk.