The United States District Court for the Northern District of Mississippi seems to understand that LLCs are different than corporations, but they don’t really want to keep them separate. See this passage, to which I have added notes: 

Regarding complete diversity, the citizenship of a limited liability corporation [no, limited liability company]  is determined by the citizenship of all its members. Tewari De-Ox Sys., Inc. v. Mtn. States/Rosen, Ltd. Liab. Corp., 757 F.3d 481, 483 (5th Cir. 2014). The “citizenship of an unincorporated [yes!] association must be traced through each layer of the association, however many there may be.” Deep Marine Tech., Inc. v. Conmaco/Rector, L.P., 515 F.Supp.2d 760, 766 (S.D. Tex. 2007). Further, “§ 1332(c)(1), which deems a corporation [wait, what?] of ‘every State and foreign state’ in which it is incorporated and the ‘State or foreign state’ where it has its principal place of business, applies to alien corporations.” Vantage Drilling Co. v. Hsin-Chi Su, 741 F.3d 535, 537 (5th Cir. 2014). The defendants submitted an upstream analysis of their organizational structure, tracing through each layer of association, to properly allege the citizenship of each member, ultimately establishing that they and Tubwell are citizens of different states.