I agree the purple leg bands look like the Marans to me. The one on your first post img5343 is a little pink in the wattles and thick legs so I’m leaning cockerel. I would be interested to see an update in a few weeks.
Marans should have pink or slate legs. I think I can see beard feathers on at least one of the pictures. Marans won’t have fuzzy cheeks. Olive Eggers don’t necessarily need to have the beard feathers but it’s pretty common.
Edit to add
I can’t see all of the combs clearly enough but marans will...