'Ennard' was made by:

u/Blossombloom997 on Reddit (Feb 22, 2018) link: https://www.reddit.com/r/fivenightsatfreddys/comments/7zct50/ennard_this_is_the_best_fnaf_art_i_ever_drawn/

'fnaf plushies' was made by:

WhisperOcra on DeviantArt (Nov 13, 2014) link: https://www.deviantart.com/whisperorca/art/Fnaf-plushies-494227686

'Funtime Foxy Draw: Custom Night' was made by:

JuliArt15 on DeviantArt (Jan 24, 2017) link: https://www.deviantart.com/juliart15/art/Funtime-Foxy-Draw-Custom-Night-659247300

'underswap cinnamon roll' was made by

TheGreatRouge on DeviantArt (Feb 5, 2016) link: https://www.deviantart.com/thegreatrouge/art/US-Cinnamon-Roll-588762056

That was all I was able to find sadly. one of them was literally reposted too much that it's impossible to find the first time it was posted

make sure to report the user for art theft! and please don't harass them! just try to encourage them to not steal art