Well actually the "gold ivy leaf thing" is what is used on a "service car", which is essentially used for "first calls" and "removals", i.e picking up DB's.
Usually a funeral home will have, depending on their size and income, full size vans or mini-vans for service vehicles, they are usually more discreet than showing up at a residence with a big black hearse, plus, the hearse is usually the pride of the home's fleet, only used for processions.
Once upon a time, a full line funeral home would have a matching Cadillac chassied hearse and service car, but since a service car was not that much less expensive that a full hearse, many started using "sedan deliveries" or cheaper chassied service cars, i.e, a Pontiac based service car and a Cadillac hearse.
There are many companies that do offer a "low priced" mini van conversion for funeral homes that are in low income or very small towns, the essentially blank out the windows and add a floor with rollers and bier pins and tada, you have a hearse, though most of the times they would rather purchase an older "real" hearse that use a converted mini-van, though I should point out that new Cadillac chassied hearses run about $70,000 tp $90,000 for top of the range models like and S&S Masterpiece.
Back when RWD vehicles were plentiful, many hease builders would offer a lower priced hearse on a cheaper chassis, its was not uncommon to see Chevrolet, Pontiac, Oldsmobile or Buick based hearses even into the 1980's, The were some companies that also made conversions out of Suburbans in the 70's and 80's to. The last gen B-body chassis was the used as the base for Buick Roadmaster and Cadillac Fleetwood based hearses, but there were a good number of Caprice Classic ones made as well.
If anyone is interested in what is currently "in style" in the hearse market..
Go to
www.accubuilt.com
They are the largest hearse builders in the world.