Thanks @bjornerik. Worked perfectly
For reference to others looking for the solution to this, here’s my code. I used the boolean “private” on pages I didn’t want included in the sitemap, then set my sitemap.xml layout as the following. It’s the standard, suggested layout, with the addition of my conditional check.
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
{{ range .Data.Pages }}
{{ if not .Params.private }}
<url>
<loc>{{ .Permalink }}</loc>
<lastmod>{{ safeHtml ( .Date.Format "2006-01-02T15:04:05-07:00" ) }}</lastmod>{{ with .Sitemap.ChangeFreq }}
<changefreq>{{ . }}</changefreq>{{ end }}{{ if ge .Sitemap.Priority 0.0 }}
<priority>{{ .Sitemap.Priority }}</priority>{{ end }}
</url>
{{ end }}
{{ end }}
</urlset>
Cheers!