Gadol you can’t boycott everyone and most likely most companies/people hate or dislike Jews whether they make it known or not.
However these companies who directly assisted in the Holocaust or profited by it probably should be avoided. Such as IBM who set up machinery and systems to track down Jews and keep track of the systematic killings and operation of the Holocaust, which btw have not apologized till this day. So what does that tell you about how they feel towards what they’ve done.
Bayer directly produced the Zyklon-B gas for the chambers.
Volkswagen especially the beetle was a design produced by Porsche and Hitler yimach shemam. The name as well was thought of by him, “people’s car”.
When the Germans ran out of coca cola, coca cola Germany created Fanta Orange which was known as the Nazi drink.
The list goes on and on such as Chase Bank freezing Jewish accounts, Kodak, Hugo Boss who made uniforms for the soldiers and was a Nazi member himself, even GE who used Jewish slaves to build Gas Chambers and the list goes on and on.
Avoid what you can. There’s a difference between a company/people who dislike Jews and companies that actually aided and profited in the extermination of Jews.