Answer:
read, raad, raid, rail, sail
read, road, roid, roil, soil, sail
read, rend, send, sand, said, sail
Explanation:
i wrote a computer program to do so using the dictionary and that's how I found out about the word raad, which apparently means "a legislative assembly in one of the Boer republics of South Africa before the establishment of British administration" as per Merriam-Webster.
The word raad could easily be replaced by Reid if names are allowed.
I'll get back here if I find solutions with more stages but more "normal" words.
Update - roid as in steroid is a slang word, but seems somewhat acceptable to me.
Update 2 - the third example only uses "normal" words.
