Pretty sure memes dont fall under fair use or derivative work. I guess it depends what your using them for. We hired a new sign maker who used the “winter is coming” meme for one of their in-store signs (it was actually tastefully done in chalk art and looked good). Its stayed up for about a week before corporate saw it and told us to take it down before we get a cease and desist.

Long version- https://founderslegal.com/are-memes-dangerous/

Short Answer -https://bytescare.com/blog/are-memes-copyright-infringement