Shadowless vs. Unlimited Vs. 1st Edition Shadowless

Here is something I learned very quickly. Every base set 1st Edition is Shadowless but not every Shadowless is 1st Edition. Shadowless is labeled 95, 96, 98, 99 and Unlimited is just 95, 96, 98 or something. I’ll have to really dive into this later and take pictures for the post.