It varies per country on what kind of politics and government they have. For some reasons, I'd agree about politics and having no political party is the best. Like everyone is from individual sectors that they're representing and whatever the economy is demanding, they might be the best leader at that time.
Monarchy is what you're describing and based on the long term effect of it, it seems good to those countries that have this type of government. But I'd love to hear it from an actual person living in those countries that have this form leadership. Because by the books, they look great but in actuality, I have no idea.
It's possible to do politics without a party, but in democratic countries, for example, if you want to appoint a regional head or president, there must be mandatory provisions that must be fulfilled because as basic capital and proof of the trust of the community, for example, having a number of supporters with the identity of the community
population attached, usually also without a party or independence, the figure of the politician must be someone who is mentally and financially stable and has a high leadership spirit and is known by the wider community. Maybe that is the picture if we don't have a party and are involved in the world of politics.