Hello HellRayzor,
Can you please provide a link for 2.5D items and spell reference ?
2.5D is very similar to isometric. It is a type of oblique projection called "military projection".
Oblique projection - Wikipedia
In the military projection, the angles of the x and z-axis and y and z -axis are at 45°, meaning that the angle between the x-axis and the y-axis is 90°. That is, the xy-plane is not skewed. It is rotated over 45°, though. Example below:
The 45° angles are the main difference between 2.5D and standard isometric. Games like Ultima Online use this type of isometric grid. PVGames (here on Itch.IO) develops sprite graphics in this style if you'd like to see their stuff for reference.
I'd love to see some of your sprite items re-rendered in this style!
Here's an example of what items look like in this style: