Stumbled upon a house clearing and grabbed a box of random lamps, there's some halogens and incandescents mixed with CFLs and the usual crap LED I'll just resell, if they even work, same with the CFLs, pretty sure they're all 6500K so I won't keep any. It's pretty dusty so I didn't really see what exactly the lamps are yet.

Also grabbed a box fan, 2 floor lamps and an alarm clock, $5 for the bunch, guy wanted $10 but the lamps have broken holders and are overall super loose, and the fan is missing the timer knob. Not sure if the alarm clock even works but there's tape on the cord, so that has to be fixed as well.

Usually because there is mercury vapour present and its discharge colour overpowers that of the gasfilling.  If you place the lamp in a freezer below about -40C and remove the mercury vapour, and ionise the gas filling not too strongly, then you can see the neon discharge colour.

If there is 40% neon or neon-helium in argon in T5 HO, why I've never seen a red glow discharges at the ends of them?

There are so many different fills, but the following basic listing is approximately correct for most manufacturers as far as I know:

T12, T8 and T5 standard : Pure argon, or sometimes argon with a very small percentage of neon and/or helium to tweak the voltage slightly.  The main exception is the British T12 8ft 100W which contains approx 25% Krypton in Argon.

T8 European energy saving tubes: Nearly all 25% Krypton, 75% Argon

T8 European extra energy saving: Still mainly argon but with varying percentages of krypton and/or even xenon.

T12 American energy saving tubes: Nearly all between 10-40% Krypton in Argon.

T12 High Output: Argon, sometimes with very small trace of neon or helium

T12 Very High Output: Usually Argon with quite high percentage of Neon and/or Helium, to raise the voltage drop and facilitate high power dissipation from low current cathodes, while also improving efficacy under high discharge current conditions.

T5 Long High Efficacy : Usually pure argon for the short tubes, and argon with between about 3% and 11% Krypton for the longer lamps.

T5 Long High Output : Argon with up to about 40% neon or neon-helium added in varying quantities, for similar reasons as in T12 VHO types.

T5 low current emergency lighting types : Argon + small amount of carbon dioxide

In all cases the pressure is low, usually between about 1 and 4 torr.  There is not a consistent trend of pressure per lamp type, this can depend on the tube length / current rating.

I've noticed that the Philips SDW-T and SDW-TG, tends to rectify during starting, even when new.
Why this is happening?

I bought it at Machsanei Teura lighting store.

That sounds good. Where did you get your track light?

I've done a lot of hot restrikes with my Philips HID-PrimaVision PV C 70 /S CDM electronic HID ballast in my tracklight, and its ignitor still working perfect.

I love these things/  Got a better quality one a number of years back from off of EBAY.  It came with a crummy 6500K tube, so I replaced it with 4100K and I like it.

Personally I hate powder coat😬, especially when it starts lifting after a few years of the elements!
For all my lanterns in use outside, I have always used auto paint
My GEC on the front of the house was originally moulded in a creamy/beige fibreglass, which after years of use outside starts to expose the glass fibre in it!
I re-sprayed the whole thing using a ‘Rover’, (British car company), beige colour that was similar to the original GEC colour! 😀
It’s still looking like new today 😎