I would say that the most important thing to take to the range with a new shooter is the mindset.
This trip is for them, not you. It is all about making them comfortable and, within safe limits, letting them decide what to do.
I start the trip before we ever get to the range. Make sure that they have eye and ear protection. Make sure you have extra in case what they have isn't adequate. Go over the safety rules. Go over the range rules.
At the range, spend a little time signing in and showing them around. This is the pistol range, that is for trap, here are the rifle ranges... If there are others already shooting watch for how they handle the loud noises. Odds are there will be some sensitivity to the noise, especially rifles. This gives you some idea of how fast you can move up to the more interesting stuff.
If you can set up away from others, do it. Have them help set up targets or steel or both. The walk out to set up the targets gives some idea of just what they are doing. I start out at 25 yards for .22 rifle and 25 feet or so for pistol (farther out if using steel). That is just a starting point. At those ranges they will be able to hit something right out of the gate. I use simple round or bullseye targets. No zombie or bad guy or even forest critter targets. I keep it neutral.
I start with the .22 rifle. Bolt action if you have it. Explain how the parts work. Explain what is a safe rifle. Show them the whole sequence dry. Have them do the sequence dry. Explain that at any time they can stop and ask questions or stop and let you take over, just keep the muzzle pointed down range.
Now we are ready to do it for real. I start with one round in the magazine. I explain that this is what I do the first time I shoot any unfamiliar firearm. Figure out the controls. Run it dry. Run it with one round. Then move up to more. That way if anything happens outside what I expect I know that one bang is all it had in it. , have them do the sequence live. Make sure they make the rifle safe at the end.
After a little time (might even just be a couple of magazines) with the bolt action introduce the semi-auto. Explain the difference. Again, have them run the controls dry, move to live fire with one shot, move to live fire with two or three, then have fun.
On my range we can shoot .22 rifle on the pistol range, so that is where I start. We introduce pistols next. I start with the .22 again. Same idea. Explain the controls and handling. Run through the sequence dry. Try a shot. Try some more.
At this point you have a good idea of how recoil averse they are, how they handle noise, how they handle instruction. I let them know that I have a collection of various firearms they can try and they can choose to try any or all of them. It is up to them.
We usually progress up to 9mm pistols next, the .45 will make an appearance but usually they stick with the 9mm or .22 LR. Some want to spend more time on the rifle. That is fine too.
I also mention that I do have bigger rifles if they want to try them, but we have to move to the other range. All they have to do is say the word. Usually we end up over on the rifle range before too long. Sometimes they just like the pistols and the rifle range is for another day.
On the rifle range, I run steel so we can tell if we hit something. We usually try the .22 again, but out at 50 or 100 yards. Then we move up to .223. If they are comfortable with that and we have time, I will bring out the M1. Again, the progression is all determined by them. Don't bring out the next bigger thing unless you think they can handle it. Don't force it on them. If they want to spend the entire day with the bolt action .22 rifle, let them. Start small, work up.
Read your audience. If they want to try everything and make noise but don't care about hitting the target (within reason), concentrate on letting them experience everything they can. If they are very interested in trying to hit the center of the target with the .22, concentrate on that. If they are uncomfortable and want to cut the trip short, that is Ok too. Remember, it is all about them.
So far, everyone I have taken to the range has wanted to go back with one exception. Years later, that exception is making noises about wanting to go back. Sometimes it takes time.