In English, names are usually written in the format:
[First given name] [family name], e.g.
John O'Reilly
Sometimes they are written:
[First given name] [other given names] [family name], e.g.
John Timothy O'Reilly
When using initials, it is the same, e.g.
J. O'Reilly, or
J.T. O'Reilly
But it is also very common, in certain situations, e.g. school roll (high school, university tutorial list etc.) to put the family name first, but this is posted with a comma, e.g.
O'Reilly, John Timothy
And in other places, e.g. an index, it is done with initials instead, also with a comma:
O'Reilly, J.T.
When doing three letters in a row, it is almost always the given name first, then the family name, e.g.
JTO
For John T. O'Reilly (that's another common way to write names).
Bill Gates' TLA (three letter acronym) would be:
BHG
The word for that sound would likely be onomatopoeic like...
Ping
Tinkle
Clink
Ding
Definition of Onomatopoeia
Onomatopoeia is the formation of a word
from a sound associated with what is named (e.g., cuckoo, sizzle).
However the word Onomatopoeia can also be used to describe the use of
such words for rhetorical effect. For example, in the sentence 'The
poet Tennyson used onomatopoeia as a linguistic device'.
Best Answer
Posted as answer, as requested:
I think that 'the sun' counts as a name. There's only one; we refer to other giant, bright balls of hydrogen as 'stars'. In fact, you capitalize Sun if you're referring to it in an astronomical context