Or, an attic system with high velocity air, but that’s big $$$
High-velocity air is amazing. Nearly silent, tiny openings instead of large grills, fairly even temperature throughout each floor of the house, doesn't tempt people to put a business-style drop ceiling in a historic home. I wish it becomes common enough & cheap enough that all the old leaky space-hogging ductwork, everywhere, gets replaced.
I grew up in a small one that did have central "air" in the form of an attic fan. At about the center of the house there was a ~4 foot fan mounted in the ceiling, concealed by louvers that opened when the fan turned on.