Good words have sounds that much their meanings

 For example letter / sound R related to movement 

Its related to words like Run,Road,river

Not to mention brand names like range rover,reebok,roomba.

Voiceless and voiced plosives 

Voiceless plosives letters include p/t/k

These are light, simple & shaper

Making them good for brands like pepsi,tiktac & kodak

voiced plosives 

These are potent x luxurious  including b,d,g

Good for brands like Duracell,godiva,balenciaga