@TapaniLastellar

Here are some notes below. 

アニメ垢 (anime accounts)
insert term and add 垢 for some niches. Examples being anime, vtuber, cosplay, slice of life (日常) 
口歓迎 (you can talk to them casually, no need to wait to get closer to stop using stuff like です)　
VTuber垢 (Vtuber accounts. Mostly indies)
content creators 　なえなの
Some don't have labels, so it'll take more effort to decide if you want to follow or talk to them 
usually a tight knit community for the anime fans so you'll get mutuals or moots easily 
Once you get more into the flow, some locked accounts will accept your follow. The locked accounts tend to post more and are more open to responding to you. Kinda like earning your trust getting past the lock.
There are also trends like 個人的特に好きな黒髪キャラ, where you can share your pictures below or make a post on it. Easy interaction.
Another way for easy interaction is when people post their situation during the day. Like Good morning, here's my lunch, work's done, ect
For the people that list their ages in bio, they might ask you how old you are before continuing the interaction

@sinimeg

Otsu, ooooh, nice, more tips! This is so helpful, you’re saving my Japanese lessons with this xD Thanks for sharing so many useful resources with us, and for the effort you put into this :) It was really fun, thanks for the stream 💙💙💙

@lumisobolewska

I've never seen anyone explain the types of Japanese accounts on Twitter before. Thank you for noting it after the stream too