Similar to @Mo'Phat, my GB group has two riders. The hospitality rider covers green room accommodations, food, drink, parking (if applicable), etc. It also describes who all will be in attendance from our group (members, sound engineers, videographer, photographer, etc.) which helps the client understand who is covered by the rider. The technical rider covers obvious things like a stage plot, PA requirements if we're not providing sound, I/O requirements for our monitoring rig as we always use our own IEM system and never rely on the venue/client to provide that even if they offer, load in/out times and location, etc. It also covers certain lesser-known items such as stage size. We have minimum stage dimensions given which band configuration the client has paid for (i.e. did they add a horn section? did they add backup dancers?). If those can't be met, then the band must be scaled down or the client must provide a bigger stage. We also include things describing the type of overhead cover on outdoor gigs.
Most importantly, if certain rider items can't be met then the client either has to provide a sufficient cost increase for us to provide them ourselves, or if they're impossible we simply won't take the gig. We also provide a grace period from the time a contract is signed to the time when it becomes finalized by us. If the rider stipulations are not guaranteed in writing along with a paid non-refundable deposit, then we cancel the contract.
By comparison my originals act is not on a level to demand much, but we do also have riders. The hospitality rider specifies bottled water for all band members backstage and on-stage, as well as the same treatment for our monitor engineer that we bring. The technical rider is little more than a stage plot and I/O list for our monitoring rig since we're almost exclusively using house FOH at clubs and theaters.