The same nominal size, a different family. Every comparison puts dimensions, stiffnesses and moduli side by side and says when each section pays off.
IPE vs HEA
narrow vs wide flanges
15 sizes · 100–600 mm
The same number in the designation, a different shape. At every size HEA has the wider flange, the higher mass and far greater stiffness about the weak axis. IPE is narrower and lighter.
The number is the nominal size of both sections, so 140 opens IPE 140 vs HEA 140.
IPE vs HEB
light beam vs heavy section
15 sizes · 100–600 mm
HEB is the standard H series. At every size it is heavier and stiffer about the strong axis than IPE, so choosing between them is usually choosing between mass and resistance.
The same designation, the same series. At every size HEB has thicker flanges and web, and therefore a higher mass. HEA for ordinary columns, HEB where resistance governs.