Your message is sinking, so I'll say what I know, which isn't that much. Maybe someone who knows more will chime in.

I've only had Modern-Aire, which has continuous controls on both the fan and the lights. You can get semi-custom or designed to spec from them.

I have read here that people will put in their own wall switch (easier for shorter people) with a continuous control on a hood which only comes with several settings. I think you could do that if you found a standard stock hood that met all your other criteria.

If you have enough distance (I don't know what that number is) from the hood to the exit, you can put in a "remote blower" to have the sound away from the kitchen, rather than having the fan motors over your head. This depends on your having a place for it that doesn't just shift the noise to where someone else will be disturbed. There are also inline silencers that reduce duct noise, but I think those are for longer runs.

As far as performance goes, if you're venting right out the wall, you don't lose cfm (cubic feet per minute of air moved) in the length of the duct. I don't know that you'd notice any difference with 5'.

Something I learned here from another member who did extensive research is that an overpowered hood on a lower setting will do a better (and quieter) job than a just enough powered hood on a high setting.

Don't forget to consider make-up air. That's replacement air for the amount you're venting. If you have a tightly sealed house, it's not going to just come through the walls. You also might want to heat, cool or dehumidify it, if you live in an uncomfortable climate.

I have a Wolf Island hood (probably made by Independent). It has continuously variable fan speed, and three position lamp control (full power, off, half-wave rectified power)

Most motors used by residential exhaust fans can be controlled by simple Triac or SCR circuits such are used in widely available motor controls.

The entire accessible set of venting threads on this forum are included here by reference.

kas