Not debating the rest but you can’t say that Eisenhower did not have executive experience.
Executive experience does not exclusively refer to governors. Executives exist outside of civilian government.
I do believe that being a five star general in charge of the European theater of WW II qualifies as executive experience. I believe Washington and Grant also had executive experience.
But certainly some Presidents with executive experience did not do so well. Former governor Carter could have done with some real world experience outside of government.
I’ll admit he had damn good experience in doing what he did best but executive experience in the political sense alludes to working with two houses of congress concerning political subjects. Ike took some time to get used to that aspect. Generals don’t seek compromise with their underling so much. Your point though is well taken. But my point was that Ted Cruz has much the same type of experience in the legal profession as Ike had in his Military career!!