Pixiv: Censored due to Pixiv's rules / Japanese law. Posts are tagged, so things are easier to find. Used to have a place where things are categorized / easy to find.
Baraag: Uncensored. Low resolution due to Mastodon's image size limit. Being to have a place online where pictures are uploaded uncensored.
Twitter: Cropped and/or censored heavily due to Twitter's rules. Mainly used to cross-promote the other platforms.
Catbox: Uncensored and highest resolution available.