The oldest version of the tag was square:
Then they moved to a round tag with the NHL shield:
The third generation tag is very similar, with just a more clean-looking font:
I’ve also seen a few of these rectangle tags with the holofoil sticker that was all the rage in the 90s and early 2000s:
Non-NHL teams sometimes got a tag similar to this, which is from an IHL team:
College teams used this rectangle tag: