Yeah there are all different kinds of lewd.Finana is a more unpure Ina, honestly though I don't find her that lewd. Matsuri is way lewd to the point she has no problem with copping a feel of Hololive girls.
Finana is simply lacking the mental wall that many other girls have when it comes talking about lewd topics. She just talks about it like any other topic. But she is more of silent enjoyer of it.
Matsuri gets actually more flustered when you approach her with a sexual topic and she also cannot as easily talk about it, but when it comes to real life, she just sexually harasses other girls with no bounds.