If you know Spanish there is this channel which goes pretty in depth on the tattoo artists' way of life, their interests and how they developed their style (mostly neo traditional artists) https://www.youtube.com/c/NeoTraditionalSpain Vice and Inked channels also have a series on tattoo styles. It is pretty basic and l am not really into it but maybe it can serve you as a starting point. Aaaaand maybe Grace Neutral's documentary can also help you since it portraits how tattooing is not yet accepted everywhere in the world. hope it helped! Enviado desde mi Redmi Note 8 Pro mediante Tapatalk