For me, it's CGA/MONO for the XT. EGA is really just a foot note, unless you have a really specific reason. VGA is really too slow for an XT to use any of its added features, so use VGA only if you really have to, kind of thing. In 286, if you run it, VGA is acceptable, although still is a little slow for many later games.
I second that that VGA on an XT is slow, quite slow.
Though not necessarily slower than the other graphics standards.
It's rather that the VGA is being limited by the 4,77 MHz 8088 and the 8-Bit bus, I think.
With an 8 MHz 8086/V30 XT (and on a 16-bit slow on top of it), it would be acceptable, I think. Such as Amstrad PC2086.
I'm saying this because I'm currently experimenting with Commodore PC10 with a Paradise VGA.
And the VGA games ran not that bad, actually.
I was able to run some RPGs and platform games in 640x480 16c, for example.
And graphics adventures such as Wonderland or Gateway, also in 640x480 16c.
Wonderland in 800x600 16c, even, albeit very cozy. Not exactly sluggish, though.
Games like Lemmings or Jetpack or Jill of Jungle were playable at ok speed, too.
Though loading times were a bit longer than unusual.
Also, many of my DOS MCGA/VGA games didn't start because they needed a real 286 (V20 wasn't enough).
In retrospect, I think that even XT owners past 1990 still had good reason to upgrade to VGA if they wanted to keep using the PC normally.
There were so many shareware programs such as Neopaint, various graphics viewers or star gazing programs written with VGA in mind.
Communication software for online services or fax might have had put a VGA card to good use, too.
Our former Minitel-like online service was very hi-res/with lots of colours.
VGA in 640x480 16c wasn't completely good enough, even.
That's why software such as Amaris BTX had optional Super VGA support in 1987-1990.
I suppose that's when a 4,77 XT with an 512KB Super VGA card made sense.
In principle, I'm doing something similar right now with Minuet online suite.
I run it in 640x480 256c (mode 101h) in order see 256c GIF files.
Edit: There was that AOL client software based on PC GEOS..
It ran on XTs, but likely looked best on EGA/VGA.
Another exception might be astronomy/stargazing software (popular between ca. 1986 and 1996).
An old IBM PC with a VGA card and an 8087 co-pro still was useful for moon phase predictions or a virtual planetarium.
The i8087 was outdated and cheap at the time (1990) and most astro software could use it,
such as SkyGlobe (supports 800x600 16c SVGA with-S switch).
So yeah, as an older laboratory PC, the PC/XT was still okay in 1990 to ca 1992..
Gamers, however, might have considered upgrading to a newer motherboard or a whole new PC by 1990.
That's understandable. First person shooters and action games were slow on a PC/XT.
PS: I recommend trying out "TheFast", a PD utility.
It will make text-output 5x faster on an PC/XT.
Norton Commander now runs normal on that Commodore PC, the scrolling nolonger crawls.
Edit: I'm just thinking out loud. I probably wouldn't have bought a 4,77 MHz PC in 1990, just to then right away upgrade it to VGA..
However, if I had gotten one as a gift for free.. Maybe I had invested in an VGA card?
To play some games my family members or friends could have had provided me with?
PS: Sorry if that sounds weird, my father was radio amateur at the time already and used PCs differently to normal people.. 😅
What I listed above probably are less common use cases, so please don't be mad about it.
For example, what comes to mind are terminal programs such as Terminate, Telemate or Bananacom.
Or the terminal application in PC-Tools Desktop 7!
With an EGA/VGA card, these programs look so cool and ansi.sys can be used.
That's great for visiting ANSI BBSes! ^^
For such things alone, I would consider a EGA/VGA card..
Graphical packet radio programs like Graphic Packet might have run on an XT, too, making a nice terminal out of it.
But again, that's the weird stuff! Not gaming related! 😅
And as I mentioned before, I probably had been ending up more like the 386 guy.
If I had to buy my daily driver, I mean.
The hot-rod 286 I really got in early 90s wasn't that expensive.
It was bare bone (mainboard with VGA, PSU, chassis) and sold cheaply.
In retrospect, it rather were the peripherals that were worth something at the time.
The 4x 1MB SIMMs, the multimedia kit (soundcard+CD), the 80MB Conner HDD, the Mustek handy scanner, old HP LaserJet Plus, Creatix modem etc.
If I knew better, I could have ended up with a barebone 386 just as well at the time.
That's what I meant to say. It's hard to find a definite answer here.
Edit: This is interesting, the PC game "Flight of the Intruder" (1990) wants a Turbo XT!
It says "Turbo XT speed minimum", a 286 is being recommended.
The requirement seems true for all graphics cards versions, I've seen it on the German cover of a plain CGA version too.
https://www.mobygames.com/game/2637/flight-of … 2/cover-164843/