You said... "I’m rather drawn to the vintage Gillette ones".

This is why I was asking. The ones I showed a pic of are the most Vintage Gillette Blades.
As Bob said, The Nacet and Silver/Blues are great. But they are new. Not vintage.
Gillette also has Yellow, Black, Gold, and Green. There might be others too but they are not vintage either.

With a mild razor, it's best to use a Keen/Sharp blade. This is a standard combo. And just the opposite with an aggressive razor. You use a Mild blade. These things you learn with time but getting this kind of info can help you to learn quicker. Stick around as we are happy to help you to learn as much as we can.