As the dungeons are always changing and new rooms could be added into the future, making a guide with every single spawn location would probably kill me. Dalgarian loot in particular, lore pages and healing items also have their own rules, which i dont entirely understand either.

So, for a general guide on every dungeon, Dalgarian or faction outpost, treasure usually has some kind of trend it follows for every room in the game:

Tables, shelves, chairs, storage crates, beds, benches and the like are all prime areas for loot to be left lying around. Shelves and tables are usually a first, and if you're in a rush they're typically both the first and last place to check if somethings there. Areas like the library have large amounts of shelves to pry through, and loot often spawns there due to that.

Caves are typically barren outside of storage crates or encampments with guards typically posted there.

Gauntlets like the Library, the Ramparts and Castle Keep, or anywhere in a dungeon that sounds off a horn when engaging in combat will typically feature a chest somewhere. The Library, for example, has a set spawn chest in the very top of the building accessed above the bookshelves. In my experience, this tends to be where a lot of magic crystals can be found, although they do spawn outside chests occasionally and this may just be my luck.

in the room your in has a door on the side of the room, investigate it and you'll likely find some moolah. An exception to this would be the chest in the area with a broken bridge, where the chests here are found either up in the rooftops if the room has no storage area connecting the two side.

Even those without a single mind stone in possession can still wave their hand around a potential loot area and have something up to grabs trigger the telekinesis highlight, which helps with things like coins, smashed tables or dalgarian dice.

Dalgarian dungeons are both very similar and yet still act as a whole new beast compared to standard dungeons as the loot there is both abundant yet the layouts make them hard to scrounge up. The chests there are odd ball shaped cubicles, and tend to house a lot of the loot found in the ruins.

Stray loot still follows the standard generation rules, and this heavily applies to lore.
Since lore cant spawn in chests, Dalgarian furniture is most likely ripe with ancient tablets and the stray relic or two, so usint a similar strategy to strip dalgarian dungeons clean is a very valid strategy. Keep a keen eye out though, as dalgarian dice can be deceptively small and easy to miss for those busy with tearing their way through dungeons.

Since a lot of the loot is either stuck in a ball or laying around on a table somewhere, most of the furniture and chests spawn in the crowded building sections of dalgarian ruins are prime areas for a chests and stray bits to be laying around.

Actually finding the chests tends to be the difficult part, as the buildings are usually heavily contested areas, require a lot of climbing (or an adept gravity sorcerer if you want to speed it up) and isnt restricted to what floor of the building its on.

typically they can be found in corners of buildings or inside rooms, with tables on balconies offering ample opportunities of loot to stumble onto.

Chests otherwise still follow similar rules to standard dungeons, where they have set spawnpoints in rooms that will reoccur throughout continued runs.

After killing the big chunky rock boy at the end of the dungeon, under the water on the right side is a tube that leads to the underside of the infuser that always spawns with at least one piece of treasure.

Hopefully this guide gave a decent idea on what to be looking at in the dungeons, and i may update this guide further with short videos of chest locations or galleries with rooms, although this could be unlikely.

Good luck