Es gibt parallel parking, perpendicular parking und oblique parking, letzteres suchst du.

https://www.researchgate.net/figure/Types-of-...

I parked near the oblique slots.

Alternative: angle park

https://www.google.com/search?client=firefox-...

Types of parking: (a) parallel parking, (b) vertical parking, and (c) oblique parking.

https://www.researchgate.net/figure/Types-of-...

(mit Abbildung)

Das schräge Parken ist eindeutig. Die Abbildung zeigt aber, dass wohl Klärungsbedarf beim Begriff des parallelen Parkens besteht.

edit: oh, zu langsam.

Backing into an angled parking space is more difficult than driving forward into a front-in angled space but is still easier than parallel parking.

https://www.snohomishwa.gov/DocumentCenter/Vi...

An angled parking space is one in which the acute angle formed by the intersection of the long side of the space and the curb is between 45 degrees and 75 ...

https://www.montgomerycountymd.gov/DOT-Parkin...

There are two main types of parking bays that you’ll come across when parking your car: perpendicular parking bays and the less-common angled parking bays (also called echelon parking bays) which are helpfully placed at angles to the road.

https://www.rac.co.uk/drive/advice/how-to/how...

also "angled parking," "angled parking space," "angled parking bays," "echelon parking bays"

#3 should read "Both #1 and #2 ..." and I was about to add "angle/angled parking space" but could no longer edit. 

Der einschlägige deutsche Ausdruck ist übrigens Schrägparkplatz.