Import your notes and files to the Notes app - Apple Support

Take the text files that you created in other apps, and import them into the Notes app. Then you'll have all of your notes in one convenient place.

Import your notes and files to the Notes app - Apple Support

How to manually sync notes from iPhone to iPad [2023 Guide]

Create and format notes on iPad - Apple Support

Import from Apple Notes to Obsidian - Share & showcase - Obsidian

Create notes and import data

Import from Apple Notes - UpNote User Guide

Create and format notes on iPhone - Apple Support

This is why I always come back to using Apple Notes over

Export Notes as PDF on iPad OS 14 - Apple Community

Apple Notes: Everything You Need to Know [2023] - Paperlike

Notes User Guide for Mac - Apple Support

How to Import and Annotate PDFs in Apple Notes - MacRumors