Is this what you mean by "floating diamonds"? I quite like this.
Out of the 7, I like 2 and 4 the best.
I'm with Sharon
I think I like this one best, but I would add another row of blocks all around the quilt.
This is my favorite.
In log cabin blocks, this is called 'barn raising' and this is one of my favorite layouts. I do like this one, but have to go look at your others.