to complete the topic see attached manufacturers videos
Inductor Construction Types
High Permeability Core Materials for Automotive

KEMET automotive inductor development presentation disclose comparison of core materials its features and applications
20 min
Influence of Number of Turns at Snap Ferrite
Inductor Saturation Current Explained
Introducing Metal Composite Inductors
Dispelling Inductor Myths
Rated current of an inductor

Würth Elektronik explains what is the rated current of a power inductor and how it is measured
3 min
Bifilar and Sectional Windings in Common Mode Chokes

Würth Elektronik explains the difference between Bifilar and Sectional Winding in Common Mode Chokes
14 min
Construction and Characteristics of Chokes