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I changed the shading. I noticed that there was some bad contrast

Okay, I got rid of the cigarette. It was having some perspective issues as well

Ok fixed his chubby man boobs


They are his hands. I didn't know if they needed an outline. so I fixed it
As for his hair, it's a mohawk. I fixed it for better readability.

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heyo zacfac, your edit improved it a lot!

I took the liberty to make an edit myself, I experimented with some parts without finding a good solution myself and didn't want to spend too much time with it so take some of it with more than a grain of salt.

First guy:
I think the mohawk should be more clear, maybe it's to wide and short right now.
I'm mostly confused about the things on the sides of his arm as well, I'm assuming it's some cloth that goes behind his back? But I have no idea what it would be.
There's some avoidable banding on the arms and overall they can be made more clear to avoid confusion.

Second guy:
There was too little contrast in the skin tones so I pushed that a bit, not sure about the result though :/
I'm assuming he's supposed to be buff based on your fist version, so define his torso more. There's also some avoidable banding on his arms, when I edited them I went ahead of myself and made them buffer as well .
The blue beard(?) is a bit confusing, maybe making the area bigger makes it more clear but I've my doubts and didn't try it so dunno.

Third girl:
The biggest issue I see is that I didn't recognise the headphones at first, largely because of the contrast. I tried to make them more clear but ran out of patience myself..
There's also a bit avoidable banding with the highlights and arms of the jacket but it's not as important as fixing the banding with the other two sprites.

I like this sprite style but there's quite some readability issues. In that size you often have to carefully watch out not to add too strong banding or too much details as they often compromise the readability. I would like to see more of these sprites!

Ok, so here is a color/Hue change. I changed and got rid of things that were causing problems.
I also added three new sprites. I probably need to change some hues and colors, but I like them so far. Tell what you think

Okay. I wanted to go for a more realistic style
I was Looking for References, and I found eastward I loved the style so I tried something new a little bit bigger then I can add detail.
This is reference

Here is what I got.
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This is much nicer, well done! Perhaps the legs of the manly guy top right could go outwards instead of inwards.  There might be solutions to prevent the black inner outlines, especially on the top right guy, they clutter up the rest. Lower right girl suffers most from banding, check the Pixel Art Tutorial on this forum to find what that's all about.

This is going much in the right direction!!!

Ok made all the angles to the sprites, and did my good old spin test to make sure they're smooth.



also here is frame by frame to pick apart