I often find myself using "posts" and "pages" to prepare block design layouts that I'll copy/paste into the areas that I want to use them in, eg, sidebar, etc. I feel like there might be an opportunity for me to simply create a custom type of post for this so that it doesn't interfere with my posts and pages having a bunch of drafts I refer to. Are there any recommendations for this? I don't want to publish any of these. I don't want them indexed or crawled or show up in search or accessible by URL. I just want to have pages where I can create designs in WordPress and have them ready to use in other places, sort of like Canva or similar to the reusable blocks area in Gutenberg and with the option of actually previewing what it would look like on a post or page and different devices if possible.
Since I'm using Astra theme, I'm just going to use their "custom layouts" for this, since I have some built-in safeguards for those to prevent accidentally publishing.