For what it is worth, what you refer to as mult bearings are called captured bearings, also referred to by the description of the bearing type, ball and race. Some refer to this as a gimball bearing. Clear as mud, as you said. Do not forget knife edge bearings, as in the older SME and SAEC designs, and fluid bearings, as in the Well Tempered. Then there are the pantograph linear trackers, such as the Garrard Zero 100. I am sure there are many more.
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