These Vikings are losers.

Erik_tlv    horned helmet, braid, holding stick 
Baleog_tlv   mustache, holding sword, horned helmet, quiver of arrows 
Olaf_tlv,    fat, braid, winged helmet, holding shield, rope on the belt  

Notes:

This is very bad lore, I do not recommend using it. It was made for experimentation, to check. The Lost Vikings, although they are quite famous characters, there are not many fanart images of them and most of them depict all three Vikings in some kind of “heroic pose”. For training, I tried using one common image with all three Vikings, and then breaking it into three parts and using them too. Suddenly lora for illustrious will be able to recognize every Viking in the image and even be able to depict all three of them. The experiment was unsuccessful.

However, there is not one more lora on this site for the lost Vikings, let there be one bad. With some luck, you can use it to create a close-up portrait of a Viking. But you won’t be able to create three at once.