I organised HoloEN members by how many times their names were mentioned on /VT/, starting from November 1st to today. Here's the list:
Gura 78,754 Shark 4,723 (Shark possibly too general?, but 90% seemed Gura related)
Mori 62,174 Calli 4,260 Calliope 1,673
Ame 59,679 Amelia 3,667 Watson 2,643
Kiara 54,881 Chicken 3,494 (Chicken too general)
Ina 39,401
Kronii 35,790 Clock 2,801 (Clock too general?)
Irys 31,234
Mumei 25,855??? Moom 1,573? Moomers 2,294? Owl 2,701 Significant nicknames, don't know all of them
Fauna 21,390
Sana 16,639
Bae 15,096 Baelz 1,934
If a nickname wasn't included, it's either because I didn't think it was used enough to be worth noting, or I didn't think of it.
If you're wondering why I picked that starting date, no particular reason, I just felt like it, completely arbitrary.