Are KiCad's horizontal 2.54" pin header and 90 degree pin headers equivalent?

What really matters for the footprint is the pad vs pin spacing. The 3D image is just a frill - it might be nice if the image matched the actual part you have, but it doesn't really matter. (When I started designing PC boards, no-one even dreamed of having a 3D image of the completed board).

Based on the source for the KiCad 3d model generator, these pin headers were modeled using a WE 613 0xx 110 21

You can find them in stock at Digikey