I'm not exactly sure what is going on. But in one of the pics I see the little loading icon where the game is loading the thumbnails and they haven't appeared yet.
So since you've said that you have played with mods in the game and out of the game, did you try deleting the localthumbcache file. No worries as the game just creates a new one when you restart. That should fix what you are seeing.
That file holds all the thumbnails that you see in the game. Those thumbnails regenerate all the time while the game is running. But if you have made a lot of changes to your mods and cc, then it will cause some issues with icon display like portraits and in manage households.
So try deleting it. The only thing you should see is that is takes a few seconds and maybe a few minutes for the portraits, etc. to regenerate the next time you play the game. Just give it time to let them show again and all should be well.
Hope this helps.
