This varies in strange ways. I dont know how facebook does this and if i could get more but i have seen facebook datasets from three people including mine.

Usualy it is all photos and vids yove uploaded, comments etc.

Mine was most complete. Including some sort of keywords tags i am interested in. Not things i followed but what fb thinks i like.

Other datasets did not include this but one included all the times someone connected to the account including IP and location.

You can do this with phone companies in Denmark, and you'll get your location history. As they are required to keep that.