Indeed! Here is what a monster spread looks like in Twilight Fables. Somethings I wanted because I felt they were important (like the Quirks section, size icon comparison, pronunciation guide, and lore table) and some were ideas others had mentioned, like removing spell lists a monster might have and instead list out every spell ability.
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That all being said, I think it really comes down to the game style you're playing. The statblock should reflect the overall game theme. If players are playing 5e, it's way easier for the DM to pick up a monster book where the monster stat blocks are familiar with what the DM already knows. For example, the above are clearly in the style of 5e, while the below is for a new system I'm currently working on. I think it should look cleaner, with the really important bits called out and up top (the part in the green box). And every monster fits on 1 page (with rare exceptions for very powerful ones).