In my experience with Mealie, most sites work, but I think some don’t allow scraping or something because every once in awhile we can’t import a recipe.
Alternatively they have a built in AI that can scan an image, so if you feed it a screenshot of a recipe it’ll likely get it in there (may need to double check stuff though)
Does Joplin really take a long time to start up compared to the rest? I just got it downloaded and synced with my server yesterday and so far it opens up almost instantly every time.