Not too sure on this one. (I don't watch many Minecraft Youtubers anymore as I'm into different content not many people cover in the niche and fewer downloads from old versions/new and upcoming content) So I don't really know much that do the type your after but I assume many of the major server play series or building type videos are what your after.
I don't watch Hermitcraft or other server plays or many other Minecraft Youtubers that do builds but I assume many of those would be the types to look for. The closest I can count for builds would be the minigames involving those (I don't watch them anymore but used to).
I've only seen ForgeCraft sometimes have base tours (the big Forge modding one by the Forge team themselves and the major devs that make mods that go into the many modpacks).
I did a base tour just today for my FiberCraft Dev Server (the Fabric version of Forge Craft basically) [not trying to plug, just a thing that came to mind for situations I can count for base/build tours].