METHOD 12 - Upscale 240p to 2160p - Which method is the best?

[I recommend to watch this video in the 4k resolution and fullscreen, even on a 1080p display.]
00:00 Method 12 / PlayStation and Dreamcast games
00:13 Blood Omen: Legacy of Kain (PlayStation 1 - NTSC) - Introduction part 1
01:08 Blood Omen: Legacy of Kain (PlayStation 1 - NTSC) - Introduction part 2
01:46 Legacy of Kain: Soul Reaver (PlayStation 1 - NTSC) - Credits
02:51 Legacy of Kain: Soul Reaver (Dreamcast - NTSC) - Chronoplast visions
03:21 Legacy of Kain: Soul Reaver (PlayStation 1 - NTSC) - Introduction » It's not the 480p version
05:12 Legacy of Kain: Soul Reaver (PlayStation 1 - NTSC) - Demo
5:44 Super Nintendo games / Tintin : Le Temple du Soleil (Super Nintendo - PAL) - Demos
8:33 Donkey Kong Country 2: Diddy's Kong Quest (Super Nintendo - NTSC) - Gameplay
10:07 Super Castlevania IV [Uncensored (Hack v1.1- Jap traduit en FR)] (Super Nintendo - NTSC) - Introduction
11:28 Super Castlevania IV [Uncensored (Hack v1.1- Jap traduit en FR)] (Super Nintendo - NTSC) - Demo
11:54 Super Metroid (Super Nintendo - NTSC) - Demos
13:43 Donkey Kong Country 2: Diddy's Kong Quest (Super Nintendo - NTSC) - Ending
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I tried some methods to upscale 240p contents to a 2160p resolution.
It's really a resolution that is hard to upscale, because of the low number of pixels.
Just to have an idea, if we compare the difference between the 240p resolution (with a 4:3 AR) and the 2160p, it gives this:
240p: 320 x 240 = 76 800 pixels
2160p: 2880 x 2160 = 6 220 800 pixels
It's 81 times more. Yes, it's enormous!
Another particular detail with this resolution is that it was originally designed to be displayed on CRT TVs, which was done, as lots of you know, with black lines between scanlines (there is often a confusion between both, because the scanlines are actually the parts of the image that are displayed, not the black lines).
And these black scanlines gave this particular look that worked so well and gave the impression of a better resolution too.
So, what is the best way to upscale this type of resolutions?
With these different methods, I tried to do my best, but some things are definitively a question of tastes, so
»» I NEED YOUR HELP ««
to tell me which method do you prefer. Please tell me what is or are your choices in the comments!
You can choose 2 different methods for the PS1/Dreamcast games and the Super Nes games.
THANK YOU VERY MUCH!
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METHOD 1: • METHOD 1 - Upscale 240...
METHOD 2: • METHOD 2 - Upscale 240...
METHOD 3: • METHOD 3 - Upscale 240...
METHOD 4: • METHOD 4 - Upscale 240...
METHOD 5: • METHOD 5 - Upscale 240...
METHOD 6: • METHOD 6 - Upscale 240...
METHOD 7: • METHOD 7 - Upscale 240...
METHOD 8: • METHOD 8 - Upscale 240...
METHOD 9: • METHOD 9 - Upscale 240...
METHOD 10: • METHOD 10 - Upscale 24...
METHOD 11: • METHOD 11 - Upscale 24...
METHOD 12: • METHOD 12 - Upscale 24...
METHOD 13: • METHOD 13 - Upscale 24...
METHOD 14: • METHOD 14 - Upscale 24...
METHOD 15: • METHOD 15 - Upscale 24...
METHOD 16: • METHOD 16 - Upscale 24...
METHOD 17: • METHOD 17 - Upscale 24...
METHOD 18: • METHOD 18 - Upscale 24...
METHOD 19: • METHOD 19 - Upscale 24...
Playlist: • WHICH METHOD IS THE BE...

[@TheSuperLumberjack]

## AviSynth script used for PS1 and Dreamcast videos (resolution: 320 x 240): ##
AviSource("240p video.avi", pixel_type="Auto")
PointResize(640, 480)
Resize8(2560, 1920, kernel="Spline36", kernel_c="Spline36") ## plugin: avisynth.nl/index.php/Resize8
BilinearResize(2880, 2160)
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## AviSynth script used for Super Nintendo videos (resolution: 256 x 224): ##
AviSource("224p video.avi").ConvertToRGB24()
PointResize(512, 448)
Resize8(2048, 1792, kernel="Spline36", kernel_c="Spline36")
BilinearResize(2820, 2160).AddBorders(30, 0, 30, 0)