These are all good stand outs.
A logo that causes people to notice it, To look at it twice, is one that produces branding.
I like logos that use optical illusions. These produce movement or transformation. That always makes me look twice.
Any logo with a gimmick is memorable.
As rocknbill said, some of them won't work so well under various circumstances. Many logos need to be used in various materials. You can print it but can you sew it onto a label, burn in wood, stamp on metal, mold it in plastic, etc.
They're definitely not as simple as they look. Logos are like - ART in a nutshell.