Where can I find a list of the ranges of the different instruments?

You could look at an exam board and see what the scale requirements are for each grade…

In the uk, the main music examining body is ABRSM

Try this.

Dunno, but I can tell you that a high school oboe player should be able to play from the B flat below middle C (this is the lowest note possible on the oboe, but it’s not hard to play) up to perhaps D, two octaves plus one whole step above middle C. Hope that helps at all. xD

I had an orchestration book with a guide in college. Mid staff works well, pretty safely. Low brass can hit your lows, woodwinds the high.
I loved orchestratin, but a bit rusty.

“The standard concert flute is pitched in C and has a range of about three and a half octaves starting from the musical note C4 (middle C). In most cases the flute’s highest pitch is C7, however more experienced flautists are able to reach up to F7 (and in some cases C8). Modern flutes may have a longer foot joint (a B-foot), with an extra key to reach B3.”

Yeah, for flutes we can go down to B3 but only if we have the right footjoint, which most people end up having by the time they leave high school, and we are expected to be able to get up to C7. Depending on how advanced you are you can get C# if you try and only a few can get up to D7.