The best replacement for susan is shaheen.

The best alternatives to susan are rated as following:
★★★★★  shaheen
★★★★★  suzanne
★★  katherine
★★  sue
★  black eyed susan
★  super susan
  super lazy susan
  suzan
  gallaxhar
  turntable

Your alternative for susan is not listed? Suggest!
Speaking about susan, one probably shouldn't forget about mike.

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



Google Trends

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susan
shaheen
suzanne