You are really loading up on Dame Agatha!
When you have exhausted (Sir David) Suchet's Poirot, take a look at Miss Marple.
I always avoided the Miss Marple stories but have since come to appreciate the early ones with Joan Hickson. I think I was put off by the more recent ones staring other actresses. This is not intended to disparage those actresses. I just think the stories are better told in the older series. Marple is less prominent and the stories quite interesting even before Miss Marple comes on the scene (well into the story) and even then she has a low key presence. From what I have seen so far (dramatization of two of the six novels -- three episodes each) her primary role seems to be twofold: 1) occasionally prodd the detective's thinking in the right direction, and 2) sum it all up at the end.
Next look for Agatha Christie stories about "Tommy and Tuppence", either the standalone movies or the series "Partners in Crime."
Then there are the dramatizations of other Christie stories. She was VERY prolific and just about everything has been dramatized, often multiple times. I think many of the new versions are disappointing. The producers try to make them relevant to today's climate. This masks their charm, period atmosphere, and heart as mystery/detective stories, with the haze of virtue signaling.