The best replacement for iron cross is maltese cross.

The best alternatives to iron cross are rated as following:
★★★★★  maltese cross
★★★★  road armor
★★  planche
★  darkest hour
★  knights cross
★  arsenal of democracy
  red cross

Your alternative for iron cross is not listed? Suggest!
Speaking about iron cross, one probably shouldn't forget about swastika.

Other search terms related to iron cross and their ratings are:
★★★★★ swastika
You have in mind a companion for iron cross and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of iron cross in all years. Click on graph for more.
iron cross
maltese cross
road armor