In Oz we have had gusting replaced by the term maximum. In my experience a lot of controllers would still say gusting. Our manual of ATS continues to attempt to align itself with ICAO.
This is what it tells us to record on an ATIS.
Quote WIND SPEED as:
a. CALM (less than 1 KT eg “WIND CALM”); or
b. SINGLE MEAN VALUE whenever the extremes between minimum
and maximum are 10 KT or less (eg “WIND [DIRECTION]/
[SPEED]”); or
c. TWO VALUES REPRESENTING MINIMUM AND MAXIMUM
VALUES whenever the extremes in wind speed vary by more than
10 KT (eg “WIND [DIRECTION] MINIMUM [SPEED] MAXIMUM
[SPEED]”).
Hope that helps