I am anyway attaching images of the list below.
@Steve and AppSheet team have created excellent help documentation on various AppSheet functions.
The excellent help articles for all these functions in the list below are available by simply typing their names at https://www.appsheet.com/Support
I thought this list will help me to easily search an article under a category when I need to refer. Hope it helps others also as a handy reference.
Request let me know if I have missed functions or any other suggestions. A few functions appear in more than one list, because i believe they make a sense at both the places.
TEXT , Conditional and Logical Functions
Math and Misc Functions
Multirow and LIST functions
Time and Date Functions