I really hate drawing line art. So I usually don't make my lines very detailed, I start coloring when they're still quite rough. I also don't process line art and colors in different layers (after all, I can say there's no line art).
Usually, I use just one layer for each character, I won't use multiple layers to draw a single character, unless that character has many very small accessories.
Below is roughly my drawing process. The disadvantage of my method is that I have to spend a lot of time adjusting and optimizing it in the later stages. This is because there isn't a very clear and specific line art in the early stages, but what can I do when I hate drawing line art so much.



