The top ones were made by Tosuke Inoue and look like new to me. Bottom one I can't tell for sure (some of the kanji look like an Inoue but others are different - which could just be stylization but I can't tell, need a native.)
I think you're confusing me with Kentos - I'm just a 7-month newbie to straights that happens to prefer Kami grinds, has done research and speaks marginal Japanese
Others are the real experts here. I'm still learning too.