Samsung is the bigger one but LG churns out better quality stuff than Samsung. That is just how it is.
I came to this conclusion back in the days of DVD players and DVD writers. A Samsung DVD player would sometimes not read a disk due to a minor scratch but the same disk on an LG player played like new.
Fast forward to today. LG Displays offer FAR much better quality images than their Samsung rivals, LG is the king of 4K and 8K
The only sector that Samsung outdoes LG is the Smartphone segment. LG washing machines have motors that last a lifetime, they are equivalent to European brands Bosch and Philips.
Another very promising company was NEC but their delay to adopt change relegated them to obscurity. NEC were very innovative in the 1990s and ealry 2000s but now they are just like Nokia. They make nice terminal displays for airports and the like.