Sauron may have faced against 5 not 2 at the end of the last alliance?

Ive been rereading lotr recently again as you do and ive been pondering how Elrond said him and Cirdan stood by Gil galad and Isildur by Elendil during the final confrontation against Sauron, im becoming more and more convinced that Sauron didnt face just 2 foes but against 5 but it was Gil galad and Elendil who ultimately got the job done but also perished in the act.

What are people's thoughts on this?