There are three choices---
flatsawn (also called flat grain and plain sawn)
rift sawn
quartersawn
For hardwoods without ray fleck (ray fleck is the various bands you see on the third photo on the right side), one might define the various grain patterns by the angle that the annual rings make wight he faces of the piece. One common definition is 75 to 90 degrees is quartersawn, 45 to 75 is riftsawn, and 0 to 45 i flatsawn. Of course, one piece can have different angles and so might have two different grain patterns and so then what do you call it? Then, some people think that there are only two grains---flat and quarter, with 0-45 and 45-90 being the division.
With lumber that has ray fleck, however, the widely understood definition is that--
quartersawn shows the ray fleck pattern quite clearly,
riftsawn shows the straight lines of the growth rings, rather than the cathedral grain pattern of flatsawn, but has no fleck.
flatsawn has the annual rings making a cathedral or "V" shaped pattern.
Further, when grading lumber, the clear area used to establish the grade, if quartersawn, must show the fleck on 80% of the area (or similar).
Regarding the pictures: The first one is 100% rift. I cannot tell if it is red or white. The second one, the light colored piece is 100% quartersawn. The third one has quartersawn on the right half, and some on the top left, with the bottom left being more rift (no ray fleck).
The rays in white oak tend to be about 1-1/2" high while red oak are often 3/4" or shorter. The height of these rays in the pictures is quite short, so I would guess that they are red oak, but ray size alone is not the best guide. The best guide is the frequency of the large pores within each growth ring. Note that not all white oaks have plugged (or occluded) cells. Not all white oaks are pale in color and not all red oaks are reddish.
Someone buying quartersawn or quarter grain veneer would have the expectation of seeing the ray flecks on 80 to 90% of the faces.