A common theme is friendship. Since they are both characters with their own personalities, many fanfictions explore how they become friends and support each other.
Definitely. Many rwby coco x velvet fanfictions delve into their relationship development. Some start from their first encounter and gradually build up to a strong friendship or something more. The fanfic writers often use their existing character traits in the RWBY series to create engaging storylines. They might put them in different scenarios, such as facing a new Grimm threat together, which forces them to rely on each other and deepens their bond.
Love or platonic love themes are very likely. It could show the deep emotional connection between Coco and Velvet Lemon, whether it's a romantic love story or a very strong, pure platonic bond that they share.
Well, I'm not sure which specific ones are the best, but you can also try looking on FanFiction.net. There might be some interesting coco x velvet fanfictions there. You could also check some dedicated fan communities on social media platforms like Tumblr. Sometimes fans share their own fanfictions or recommend good ones there.
You can try Archive of Our Own (AO3). It has a large collection of RWBY fanfictions, and you should be able to find quite a number of coco x velvet ones there.
There may be some good coco x velvet lemon fanfiction on Wattpad. You can go there and use the search function to look for it. Just keep in mind that the quality might vary, so you may need to read a few to find the ones that suit your taste.
A fanfiction that I really like is 'Coco's Guidance'. In this story, Coco takes Velvet under her wing in a more pronounced way. It shows how Coco's confidence and style influence Velvet, and how Velvet in turn brings out a softer side of Coco. 'The Fashionable Duo' is also a good one. It plays on their different styles, both in fashion and combat, and how they complement each other. There's also 'When Coco Met Velvet' which is a great origin - story - type fanfic that details how their relationship began at Beacon.
There are many Velvet x Coco fanfics out there. You can start by looking on fanfiction websites like Archive of Our Own. Just search for 'Velvet x Coco' and you'll find a variety of stories written by different authors, with different plotlines and styles.