>>388132473
>>388132776
Sh used YYB Rin for 2 years or so,
Te has always been using Api Miku,
Aq used various Yukaris for years,
Ed used Api Rin for 2 years or so,
Uz used Sour Miku for a year

Az, Bl, tiny Rin+Len were already mentioned.

>>388135785
They can also rip avatars set to public, even if they are not in the instance. Generally, consider everything uploaded to be rippable eventually.