Sticky Post

There’s a long history about this topic that is still unresolved to this day.

https://core.trac.ww.wp.xz.cn/ticket/12702

Searching for plugins that maybe do this type of thing for you leads me to https://ww.wp.xz.cn/plugins/sticky-posts-switch/ as at least one example, and we realize that it’s a few years old at this point, regarding last update. Worth trying out. Otherwise it’s going to need to be a custom solution to handle.