Don't know what Starion is, but I guess it is another rebadged car, really don't get idea of rebadging, makes just things complicated.
RX7 is product of Mazda corporation, one of few cars that use
Wankel engine.
What you probably did not know is that one Finnish guy did invent similar engine almost same time, however because lack of funding and some other issues he did not manage to patent it before Wankel did his and this Finnish guy's invention was abandoned and forgotten.
Story was first time published in one local car magazine at 90's, rather interesting it was to read.
LFS cars may look like some cars IRL, but they are perhaps not very well based to anything IRL, specs are so different and surely looks are not perfectly same as any single car, well, except MRT, well RAC and UF1000, there is of course this BF1 too and...