The Mauraders were made in the 60's, but Marlin also made a LTS version during '88 and "89. They are essntially a more modern Maurader with a 16.25" barrel. The only real difference is the addition of the crossbolt safety and a square lever. I'm not sure of the production numbers on the Maurader, but only around 2,700 LTS rifles were made. I've only seen 1 LTS and I own it. I've seen several Mauraders over the years, but have not been willing to pay the collector prices for them.
Marlin made quite a few straight gripped versions up through the 70's. They are commonly refered to as "Texan" models, but all I have seen have no special designation on them. I have 1 made in 1958 and 3 from the 70's. (I much prefer the straight grip Marlins if you cannot tell). I know where another is located, but have been putting off adding it to my collection. Almost all of these have 20" barrels, but they made them with 18.5" barrels for one year I think. I had 1 of those years ago and like a fool let it go. They may be the most rare. I see 4-5 of the 20" Texan versions each year cruising gun shows and pawn shops, but that is the only 18.5" version I've seen.
Marlin also made the Spikehorn with a 16.5" barrel and a pistol grip cut shorter as a youth rifle. Not sure of the years, early 2000's I think. They are no longer made and I have no idea on numbers, but would bet they did not make many. This is not an all inclusive list. Just the ones I am aware of.
During 2005 Marlin made a 336SS-LTD. They made 500 blue and 500 stainless. They are essentially a guide gun chambered in 35 Rem. I bought one of the stainless versions. They have an 18.5" barrel and straight grip.
Marlin is currently offering some special versions with different barrel lengths and other features, but I'm not up on the newer models. Not sure I'm willing to pay the prices they are asking for the newer ones either.