Okay so you have:
Emsam patches (selegiline)
MAOIs Nardil or Parnate: these are old school but effective. Does anyone prescribe them?! They can work when nothing else can (apparently). Don't know which country you are in. Try begging for one of these.
Tramadol: they probs won't prescribe but some find it helps TRD when they are prescribed it for backache etc. I got it under the counter, it did help me out if bed. Felt a bit hazy and only used it occasionally…But check the reviews on drugs.com
you don't have lithium on your list - can be helpful combined with other meds. Is brain-growth fertiliser. You can also get otc lithium orotate. Do not combine with psychedelics as seizure risk:
psychedelics: shrooms, lsd (or ayahuasca). better with tour guide…Ayelet Waldman wrote book about microdosing lsd for depression. I've had some luck with regular doses at 150ug. LSD is the reason I can get out of bed and less weeping and desperation to hang myself. It is better with a friend/therapist. I had success with it on two different occasions, but when I used it alone it did nada. It's kind of LSD plus love is helpful.
Here's a little research on lsd boosting BDNF levels:
Freud used cocaine for depression. If only the effects were longer lasting
did you try cannabis-edibles have helped me
Did they test you for MHTR gene mutation?
Thyroid hormones?
(menopause if female- some women were given ect not hrt!)
Erm more niche treatments:
https://en.m.wikipedia.org/wiki/Low-level_laser_therapy there is small amount of research on this for depression (it boosts mitochondrial function). It needs a particular frequency and strength to use on head and I don't know where it's provided or if it's possible to self administer
FMT is a bit gross…has shown great results in one person with bipolar and some depressed mice:
buprenorphine (less niche, but opiod, they probably don't prescribe but some research it helps)
Adderall/amphetamine:
Official answer: Although Adderall is only FDA-approved for the treatment of attention-deficit hyperactivity disorder (ADHD) and...
www.drugs.com
I hope something on the list or some magic pill/combo is helpful for you.