Notepad was in Windows from version 1, FWIW.
I don't recall what all was in Windows 1, but I worked on IBM's "DOS and Windows Kit"1, a software bundle for the PS/2 (particularly the Model 25, which IBM intended as a Mac killer2). It included Windows 2.0 or Windows/286 for the 286-equipped models (Model 50 and Model 60), and there was a decent set of apps with Win 2: Paint, Calc, etc.
The Kit added Function Editor, which was basically a mathematics typesetting tool that could print or export as bitmap, letting you embed formatted mathematical expressions in documents; Grapher, which was a data-plotting app3; an interactive tutorial; and some other goodies. If you were going to buy a PC for an undergrad, it was a pretty good value at the time. But it wasn't advertised and I doubt many copies were sold. Then Windows 3 and MS Office came out just a year or two later, and while that combination was significantly more expensive, it was also considerably more capable.
1Which did eventually ship; I saw it on sale once in a university bookstore. In the few years I worked for IBM, I contributed to two projects which became actual shipping products, and one that became an open-source package that's still around and apparently still used. Really quite remarkable luck.
2At which it was a dismal failure. The '25 wasn't a terrible machine - we used to use one for network monitoring and as a Telnet terminal - but it didn't have much going for it, either.
3Unfortunately it didn't also do business graphics (bar charts and the like), which would have made it useful for more students. 123 and Excel were great for that, but legal copies were generally too expensive for students.