RSS Feeds
Follow the RSS 2.0 specification which includes examples.
The following is an example for publishing a podcast RSS feed:
<?xml version="1.0"?>
<rss version="2.0">
<channel>
<title>Podcast</title>
<link>https://www.example.com/</link>
<description>Example podcast</description>
<language>en-gb</language>
<managingEditor>support@example.com</managingEditor>
<webMaster>webmaster@example.com</webMaster>
<pubDate>Sat, 1 Feb 2020 21:50:30 GMT</pubDate>
<lastBuildDate>Sat, 1 Feb 2020 21:50:35 GMT</lastBuildDate>
<category>How To</category>
<generator>Emacs Editor 26.3</generator>
<docs>http://blogs.law.harvard.edu/tech/rss</docs>
<image>
<url>https://www.example.com/podcast.jpg</url>
<title>Podcast</title>
<link>https://www.example.com/</link>
</image>
<item>
<title>Episode 01</title><!-- Exactly the same as the title in the podcasts embedded tag -->
<link>https://www.example.com/podcast.m4a</link>
<description>Example podcast</description>
<pubDate>Sat, 1 Feb 2020 22:18:21 GMT</pubDate>
<guid>https://www.example.com/podcast.m4a</guid>
<enclosure url="https://www.example.com/podcast.m4a" length="12345" type="audio/mpeg" />
</item>
</channel>
</rss>
See Apple's Podcasts Connect documentation for additional information. The documentation also lists Apple Podcast categories in the 'More resources > Apple Podcasts categories' section.
-- Frank Dean - 1 Feb 2020