Do you have a brand or manufacturer preference?
It'll be really hard to list all the used models that have a slideout.
That would be going all the way back to 1999.o
I would estimate that would be close to 100 different models since then.
With a wish for sleeping 8-10, I suggest a 3 bunk hybrid with a slideout.
The first and most popular one is the Roo/Shamrock 233S.
Dan- Firefighter, Retired:C, Shawn- Musician/Entrepreneur:W, Zoe- Faithful Golden Retriever(RIP:(), 2014 Ford F150 3.5 EcoboostMax Tow pkg, 2016 PrimeTime TracerAIR 255 w/4pt Equalizer and 5 Mtn. bikes and 2 Road bikes