independent voters cannot be defined by any particular issue.
There are many independents that vote 100% straight Republican, while others vote the other way and others who may vote a mix. And many (probably a record) independents voted and support Donald Trump.
If you want to define as you just did, there are Democrats who vote Republicanism and Republicans that vote for communism.
Trump is, more or less, a traditional Republican politician. Straight out of the 1950’s, he is. If that doesn’t appeal to the voter base, it’s because they want something else. They want traditional America. They want an America that is socialist.