English is mostly English Between Aus, NZ and the mother country. It's the regional slang that marks most of the differences as How-to Dad highlighted.
The Esky example from the videos is a good one. We call it a chilly bin but for many years in Australia The Esky brand of chiller bin was the dominant/only brand in the Australian market, hence all Chiller Bins are Esky's, to my knowledge we never got Esky in NZ.
In the UK a similar comparison is to 'Hoover' the floor instead of vacuum the floor. In the US you might 'Xerox' a document rather than photo-copy it. Some of the others I have no idea how they came about, especially a thong being an item of footware instead of a skimpy ladies undergarment. NZ and Australia both have a lot of individually unique words for putting people down/degrading them. I have no idea why that is.
There's bigger differences I think between the US and Aus, NZ, and the UK.
For example we all spell colour and aluminium correctly and don't swap S's for Z's in words ending in ise, and a scone is the larger baked good with a firm crust and soft interior, while a biscuit is the smaller crunchier one.