> or simply something that is not directly correlated with the product itself (Uber...)

Uber was initially named Ubercab. They changed it when regulators began to treat them like a cab company.

> You can also try with word alterations such as Lift > Lyft, Scribble > Skribbl, Domainer > Domainr, Engine X > nginx.

This creates the inconvenience of always having to specify the spelling when you tell someone about it for the first time. It's similar to having a number in your domain name, you always need to specify if it's spelled out or it's the digits.

Naming is difficult.