I was going to tag @Brian_Rushton as he’s played gazillions of IF! He’s made a lot of recommendation lists on the IFDB which may be helpful. Strongly second the Birdland mention and the Twine work on sub-Q magazine!
You may have played some of these before, but here are some of my favourites:
Vesp by porpentine: surreal cyberpunk horror with insects.
With Those We Love Alive by porpentine: you’re the servant to an inhuman empress in a surreal world and must make hard decisions.
My Father’s Long Long Legs by Michael Lutz: unsettling psychological folktale-feeling. Short, punchy, reminds me of Emily Carroll.
The uncle who works for Nintendo by Michael Lutz: low-key, unsettling creepypasta feel.
Detritus by Mary Hamilton: a journey through life and relationships via objects, a packing sim that packs a punch.
To Spring Open by Peter Berman and Yoon Ha Lee: a moody speculative rebellion game chockful of intriguing worldbuilding details
Invasion by Cat Manning: not wake-up amnesia, but very concerned with memory loss, abandonment, and alien invasion
Swan Hill by Laura Michet: courtly intrigue, magic, family and guilt - lovely worldbuilding and great writing
Tangaroa Deep by Astrid Dalmady: a contemplative journey in a submarine exploring the underwater world
I don’t know if it’s unclassy to link my own stuff but hey, here is also a list of my work, much of which is Twine.