Reagan was fooled by the NeoCons. They were doing things behind his back. But he did believe in Peace and Free Market and Democracy. So he would have been far more polite than Trump. He and Trump would have had the same end goals. And the left would have attacked Reagan mercilessly for his religion, his stand against public unions and his fight for free markets.
They did attack him for those things. They treated him a horribly as they did Trump.