I wanted to cloth when i was preggo with #2, i did some (limited) research and i found i think Gdiapers. Whatever i was looking at i saw you had to buy these disposable inserts and i was like well that makes no sense, your not saving money and i basically stopped looking.
Now im preggo with #3 (and last) so i started looking more into it. I started my daughter (#2) who is 22 months. I went cheap route, i got Sunbaby, Alva, Kawaii to start with. I bought some new from each place, and then got used ones from facebook groups etc. Then i found out about co-ops, so i ordered more. I also got like one rumparoo, one happy heiny, one fuzzibun (the more expensive brands) so that i could see if i liked one more then another. I spiraled out of control and had like 70 diapers within a month. VERY addicting. I have recently sold some that i didnt like (like size 1 or presize sunbaby they were too small). Right now i have to stuff mine with a MF, Hemp, AND bamboo just so she doesnt wake up wet at night. I have some Kawaii heavy wetters that i just got that i need to prep and have got a couple of prefold fitteds and covers on the way to try at night.
Id say just buy one or two of a bunch of different brands and styles. When you find the one you like then get more. Check out facebook groups (not sure if i can link any) and worst case scenario you sell the ones you dont like and lose a buck or two (if not make money)
My biggest issue is the wash routine. Trying to figure out what works, because nothing does for me. And what works for me, its almost 99% positive it wont work for you. Im about to buy a used old washer with an agitator and hook it up to my hose outside.. lol

Here is the list of diapers i am getting in my rental. Do you recommend one over another for nighttime use...
1 FuzziBunz Elite One Size Pocket Diaper and inserts
1 bumGenius 4.0 One Size Pocket Diaper and inserts
1 Blueberry Simplex 2.0 All-in-One Diaper
1 Bummis Easy Fit One Size All-In-One
1 Thirsties All-in-One Diaper
1 bumGenius Freetime All-in-One
1 Flip All-In-Two One Size Diaper with one stay dry and one organic cotton insert
1 Applecheeks Little Bundle with 1 additional bamboo insert
1 Blueberry Fitted Diaper
1 Rumparooz One-Sized Cover
2 Diaper service quality prefolds

If its an all in one, that means the liner is attached inside the diaper so you dont need another one. (unless heavy wetter) to me (and im still new too) an insert, doubler, soaker is all the same thing just different name. A liner, i assume is to catch the poop. You can use fleece/flannel/or the disposable kind put that on top of the diaper next to babys butt, and when they dirty it, that can be thrown away (or cleaned if fleece/flannel)
You can add an extra insert (or doubler/soaker) to an all in one if you need additional protection (but you have to be careful what it is made of because some cant go against babies skin)

I may have figured it out...I think it is a newborn size microfiber.

I started cding my daughter at 17 months and it was definitely better late than never. It was difficult to take the plunge because there is so much information out there, but we've been doing it for a few months now and I love it! We use the BG 4.0 AIO and I haven't had any problems with leaks, even overnight. For nighttime we just use both the regular and newborn MF insert and she stays dry until morning. I just bought a few hemp inserts so I'm going to try those at night with the regular MF insert and see how it goes.