English does a lot of shorting, rhyming nicknames. We even like to lengthen the rhyming part back out to be even more confusing.

• Richard -> Rick -> Dick

• William -> Will -> Bill -> Billy

• Robert -> Rob -> Bob -> Bobby

• Margaret -> Meg -> Peg -> Peggy

• Edward -> Ed -> Ned | Ted -> Teddy

A lot of common names also have just a variant which barely seems related:

• Henry -> Harry

• John -> Jack

• James -> Jim

And you'll have to Google for all the nicknames for "Elizabeth" because I can't remember them all.

What we lack for creativity in names themselves, we make up for with creative nicknames because every other kid is called Elizabeth.