Nobody has mentioned my favorite...
- I also like 3 and 6. I like 1 because that's the one that is the most different to me. Feel like I've seen the rest of them before in different iterations.
BTW, All these 6 iron heads are available on eBay for 24.99 shipped. Not mine. I just went looking after seeing CP's offerings here.
Fujimoto Gikoh is the name of these. They have some nice iron head sets but much busier than the clean looks above...
These remind me of the Piranha's for sale...for 10x the price: