Which one do you like best?

I think the 7th looks and works the best.

1 - with the middle guy orange and the back guys blue as another poster mentioned. I also think having orange and blue expands your website colour palette as well.

Colors of 7, layout of 4 👌🏻

5 and 7

The 1st one is the best but the white part on the top should be transparent, it would look better on the website. The 3rd looks good too because the shape is fully visible.

1 for the image, but swap the colors - make the front middle guy Orange and the back guys blue

2 for the border width - I like it narrower than 1

6 for the calendar view - tells me what it reschedules