Our Hotfix are always cumulative and there fore the newest build includes all.
Determine which version is the latest by verifying the modification date on FTP when you download it
Our Hotfix files are normally following this structure: SDL Web component (CM/ CD/XPM...) + Version (x.y.z) + Defect ID (xxxx) therefore CD_18.104.22.16856.zip is. For example a Hotfix for content delivery verison 8.1.1 build for defect 3556
So in Summary, if you have 2 hotfixes with the same jar files, always apply the latest released.