I've tried tons and ended up on Notion. Works on every device, syncs well, supports rich embeds and easy publishing to the web. It really depends on your preferences. Anything works as long as it has cloud sync and half-decent search.
Some apps I've tried and liked: Apple Notes, Simplenote, Bear, Obsidian and Craft
Some apps I've tried and liked: Apple Notes, Simplenote, Bear, Obsidian and Craft