What's the word for sentences like - "There are two kind of people in this world - those who like ice-cream and those who don't" [duplicate]

single-word-requests expressions

I think the term tautology (specifically a logical tautology) could apply here.

Related

Do you use an apostrophe for a group or institution name? [duplicate]
“Get something to work” vs ”Get something working”
Gerund or Participle? Which one is correct? [duplicate]
Is it bad English to substitute the word 'says' with 'goes'?
Hold phrasal verb for "waiting until something happens" [closed]
"Don't look a gift horse in the mouth" synonyms
Looking for a word that means the thrill of doing what is forbidden [duplicate]
Term for a television event that causes you to be awake during sleeping hours
Meaning of "snatch the words from"
"A might bit" or "a mite bit"?
It is grammatically correct to have an adverb both before and after a verb? [closed]
"Since <year>" - since when in particular? [duplicate]