I think will have Toyota Crown and Lexus LS related, based on RWD. Lexus ES related with the FWD Toyota Avalon or Camry. I think the Lexus GS and Toyota Mark might be cancelled. The Lexus IS might grown in size, be and be more a sports sedan "coupe". Most by SUVs/CUVs these days, so for a sedan to have a USP is to make it sportier. GX might just be replaced by RX-L.
http://www.autonews.com/article/201...nes-plan-for-fewer-sedans-more-crossovers-evs
Cadillac plans to replace sedans by fewer models. It is not certain Volvo will replace the S60/V60, because the XC60 simply will be the better seller. They will soon unveil the XC40. A patent has been filed for "S50". It could be something like between the XC40 and XC60, lower, coupeish like the concept they showed. Telsa Model 3 will definitely hurt premium compact sedans such as 3 Series, C Class, A4, IS, Q50 and ATS.
Land Cruiser / LX will have fierce competition from Range Rover, Mercedes, Audi, BMW, Bentley, Rolls Royce, Jaguar, Maserati, Ferrari and Jeep. While except Jeep and Range Rover all other SUVs are not off-road capable and thus do not target the same customers, there are rivals. While I think the next Land Cruiser / LX will have IRS in addition to IFS, I think it will and has to remain BOF, an exception in this class. The new Patrol looks more like a profound facelift, rather than an all new model. Reliability and off-road capability of the Land Cruiser / LX is its main selling point.
The Prado / GX could be replaced worldwide by the Fortuner, which is alot better than the previous one, and is much more SUV than 4x4. With the transition to BEVs, eventually RexEVs, companies have to cut down lowest selling models and body types. With LC, I find the RC redundant in Lexus' lineup. A convertible based on the LC makes more sense than in the RC, also because the RC is approaching its half-life cycle.
Anyway BEVs are the future, better start focusing on those. The only car needing to retain an ICE is the Land Cruiser, until batteries permit 1500 km range.