sex?

I have 4 plants outside and on 1 where I topped it it produce little male pollen sacks it looks like does this mean they are forsure male plants

I'm 8 days into flower, finally feel like i'm seeing signs of sex. Just want some second opinions, Are these dudes? I have them both in the same tent, if they are male could one have pollinated the other this early on? One plant another plant

I'm wondering if this is a female. I'm just at a month into my first grow using some bag seeds.