Help with 7-8 Week Sexing

[Mountain Mark]

Hi all, happy to be a part of Backyard Chickens. I've got a few different breeds I was hoping for some help with sexing.. I've attached pictures and my guesses for each one but I'm unsure. Some may need to get older to know for sure?

Chicken 1: Olive Egger - chicken 1 and 2 were supposed to be Sapphire Olive Eggers but I'm not sure if they are, 7wks 5ish days (2 pictures). I think this one is a pullet.
Chicken 2: Olive Egger, 7 wks 5ish days (2 pictures). I think this one is a cockerel.
Chicken 3: Sapphire Splash, 7 wks 5ish days (2 pictures). Unsure. Developed small comb around 3-4 weeks but hasn't grown much and isn't red. Big legs though.
Chicken 4: Easter Egger, 8 weeks (2 pictures). I think this one is a pullet.
Chicken 5: Easter Egger, 7 wks 2ish days (4 pictures). Unsure. Looks different compared to the other EE but haven't seen that many EE to know what to look for.

Any help would be appreciated!

 

[Painted Calls]

Bird 2 is your only cockerel.

 

[Sammi_0411]

Yes I agree

Bird 2 is your only cockerel.

 

[Sammi_0411]

Welcome

 

[Yep I Talk To Chickens]

Bird 2 is your only cockerel.

I agree.