Some of these are possibly not canon, for example the goofy mugshots from the Gambi fashion ad (those would be the ones with the bandages and odd expressions). I think the canonicity of them probably comes down to personal preference. The others are definitely canon.
I love how the Trickster’s Magic Cards for the 2017 Trickmurk Circus are the images from Runestones of the Arcanist. It’s a nice tie-in to site Lore in my opinion and makes the Runes even more interesting to me.
I just imagine dragons sitting around with incense burning and candles lit, reading the future from picking rune stones or using the cards like the tarot and it makes me happy^^
(The four dragons are used only as example since they have some of the clearest card images that show some of the runes.)