Last shitware i can remember was the 3rd party IR remote control software they bundled with Note3/4, because a couple years later it was updated to have ads on lockscreen. But it was easily disableable from the app list.
The latest Samsung device i have is tab s8 from this year and the software i would call bloat was all the Google stuff like Youtube, Youtube music, Duo, Chrome, Google search. And worst of all the Google assistant that you have to go to multiple places to disable.