Posts from Heads from Skyrim.
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If I don't forget, I'll write later how to fix the square shadows on the face in Maua6.
Added 3 minutes ago
At the same time, in RaceMenu itself, you can take some kind of conditionally ready face and completely rework its vertices using the "Sculptor". That is, you get a face that, although not created from scratch, does not borrow anything from anywhere.
Added 10 minutes ago
I googled a bit and didn't find any face models created from scratch for Skyrim. Maybe they exist, but I didn't come across them.
There's only this disaster:

When a guy just throws a turbo-smooth modifier on top of the model, and voila, it's now ultra-mega-super-next-gen-high-poly.
The load on the computer increases by two times for no reason, and there is no difference in the game. Don't do that. Models are not raster images. More polygons do not equal better quality.
Wow. That wasn't the limit. It can be even higher poly.

Added 15 minutes ago
And here's a wonder for Oblivion.


The author writes something like:
All head model and texture assets are my own work based on Bethesda meshes and may be used as modders' resources. Original hairstyles included in this mod also apply.
Perhaps he still used Oblivion models as a reference, but judging by the appearance, there is a new mesh and textures. You can compare and check.
In any case, it seems that the author gives permission to use his work in mods.
Here's the link if you need it.
Just if you use it, mention who the author is and where you got it from.
Added 9 minutes ago
There's a mod with new face models and textures for M&M Warband, but it only has female faces. This mod is an OSP, i.e., its resources are free to use, provided that the author is credited.

Download link
By the way, yes, it would be interesting to read about this later.
The head needs to be processed with the Smooth proxy and Reduce options; the result will be as follows:
The main advantage of this method is its simplicity, but the disadvantage is the increased "roughness" of the eyes. However, you can leave the original Skyrim eyes or just ignore it because it's impossible to examine the head so closely in the game.
Added 2 minutes later
True, the shadows on the reduced model look a bit rough. I know how to fix this in Max; you need to use the Edit Normal modifier, select all the normals, then break them apart and join them again. The shadows should look smoother after that.
It's interesting to see how quickly retopology is done there, judging by the appearance.
And for a quick, one-click option, it looks very, very good.
I always wanted to ask if the faces from Skyrim are too heavy for Heroes, but now I see that you're simplifying them, and that's the right approach.
And doesn't smooth add polygons? I mean, is it just smoothing groups, or is it a multiplication of polygons? Because if it's a multiplication, then it's a pointless situation: you multiply first, then divide. If you reduce it directly without multiplication, then it should result in a cleaner version.
Regarding the squares on the first face. It's just that the smoothing groups aren't configured. I can fix it in Max with one click. This is in my guide on transferring a model from the 7th game. Or maybe smooth does the same thing here.
Added 2 minutes ago
The shadows on the reduced model do look a bit rough. I know how to fix this in Max; you need to use the edit normal modifier, select all the normals, then break them apart and join them again. The shadows should look smoother after that.
Added 26 minutes ago
And also, it should be added that Smooth proxy, in addition to increasing the number of polygons, smooths the shadows - this is its purpose, and reduce simply reduces the detail to a reasonable level.
A normal head is made in 5 steps:
1) creating a smooth model
2) deleting the original model
3) adding lighting to the render
4) reducing the detail
5) combining the models into a group for porting to Heroes