It's actually the other way around: Luigi's Mansion takes the Mario render from Mario Golf. Luigi's Mansion in general has the oddity where some models are clearly based on the Nintendo 64 era (Luigi's in-game model) and some are modern (Mario's in-game model and Luigi's official render)I like how Mario's pose in the third one is taken from Luigi's Mansion.
I love the different styles shown here, but my two favorites are Koopa (pencil sketches! :D ) and Yoshi (the style is similar to some of the Yoshi games and that is very cool).
Mario Kart has its 30th anniversary, so that means some fan art! This one is a collaboration between different artists.
Thank you for reading.