Slight "tick/cick" I need help before I go insane!

I thought my BB was knackered but it turned out to be internal cable routing. When cracking on I'll tend to probably put too much into the bars and move them slightly so it corresponded with pedal strokes. It wasn't much of a sound but it was annoying. It was only when I stripped the bike down on my stand I accidently moved the bars and it made the same noise.

I know this one!! Or at least I had a similar issue that was resolved after months of me agonising over it. It was the end of the derailleur cable on the RIGHT side of my bike that touched my right pedal as I passed it. It was the slightest of touches but was enough to resonate through the frame and annoy the heck out of me. I couldn't locate the source of the click. Theresa from Mosquito Bikes in Islington sussed it out in seconds when about four other bike mechanics said they were baffled (is she/are they still there? This was years ago).

Undo then retighten the front (and why not rear) QR skewer? 

So the noise changes depending on where your weight is - no weight or lots of weight on the front end suggests headset or front axle to me. I've been spending lockdown chasing creaks on various of the family bikes, especially coming out of the back of a cross season. Pretty much silent now. So far:

Four bottom brackets 

Freehub bearings, and greasing ratchet/pawls

Tightened drive side rear dropout, and greased threads on axle

Greased and tightened direct mount chainring

Loctite on chainring bolts

Headset check

Spokes - found two loose ones, also a bit of lube on the crossovers

Seatpost greasing

Pedal threads - copper slip again

Tested pedals using soft soled shoes to eliminate cleat noise as source

Tightened lock rings on SRAM cassettes (XD especially needed more grease and more torque)

If you've checked your drivetrain, seatpost & handlebars, check your headset next. I had this once. Nearly drove me insane tracking it down

I have a Specialised Langster - it had a click, which seemed to coincide with crank revolutions. I sequentially swapped out the pedals, installed a new BB, swapped out the freewheel, new chain and chainring. It still clicked.
I took apart the headset bearing, and found a cracked ball-bearing (crappy loose ball-bearings)! I knocked out the horrible Specialized headset and fitted a new set of sealed bearings - no click! It seems that the slight regular movement of the steering with pedalling was enough to cause the bearing to click.
Laborious and expensive, but it's now practically a new bike.

I've a similar click noise on my bike, not constant but... A bike mechanic suggested that it's not always the bottom bracket but can be wheel/spoke related.

Saddle rails? Had a squeak from where the rail went into the saddle body. Squirt of lube (GT-85) sorted it temporarily.

Seat post - it's nearly always the seat post if it's not an obvious candidate.  Especially as it happens when you're seated, although this is not a necessary condition for a creaking seat post.  Take it out, clean both it and the tube and replace.

It's not just the pedal bearing, is it?

Have you tightened the chainring bolts? Often a culprit.

I had this, right down to the "stand and pedal - stops".

It was the seating of the grommet where the rear brake cable exited the (aluminium) frame on the top tube. It was a hard plastic fitting, and there was just enough flex in the frame for it to rub against a coarse edge of that fitting. If I stood, or pedaled with the brakes on, the frame didn't quite move in the same way and the noise stopped. 

Found it by accident slapping the frame in frustration on a ride after having dismantled everything for the N'th time. 

Removed the grommet and put a dab of grease on it and the edges of the hole in the frame, and silence.

Hope you find it...

I had a creak. Fitted a new bb. Swapped pedals. Tried different shoes. Dismantled seatpost, cleaned, greased, reassembled. Dismantled crankset, removed rings, cleaned, greased, etc. Checked bars and stem. Still had a creak. Drove me mad. Turned out to be the rear skewer. Cleaned, bit of copper slip, do it up quite tight, all good. You live and learn. I feel your pain though.

oil your ankle

Front derailleur cable end hitting crank arm?

Nothing to add, but I feel for you Brother! 

If you haven't read this already, the solution may be contained here:

https://www.sheldonbrown.com/creaks.html

Bottom bracket????? Apologies if this has been checked.