Bearing Lubricant - Consolidated Info (& a few questions

I'm new to 3D printing - recieved my i3 MK3S kit and am building it now. I'm at the Y-Axis step and thankfully came across many bearings discussions.

Lubricant Consolidation: Steps and Benefits

Bearing Lubricant - Consolidated Info (& a few questions) – Hardware, firmware and software help – Prusa3D Forum

Time to settle the argument. Are the bearings greased? : r/prusa3d

Solved [The following information applies to the questions

How to Select the Right Bearing (Part 6): Bearing lubrication / Bearing Trivia / Koyo Bearings(JTEKT)

Bearing Design: What You Should Know - Consolidated

Understanding Bearing Lubricants

Bearing Lubrication Tips & Mistakes You Might Be Making

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Tru-Pitch Steel Radial Ball Bearing - Ace Hardware