SD CARD READER - Flush or not flush when card is inserted

[baertracks]

I keep an 1TB SD Card inserted into my P52 laptop at all time for easy transfer of very large data files to my desktop.
In the p52 models, the SD card fully inserts into the laptop (does not stick out of the laptop).
In considering upgrades to a P52 I would prefer getting a model with a FLUSH SD card reader.
There seems to be quite a few similar models to consider, e.g., P15, P15s, P15v, T15, T15g, P1, X1, etc.
I found video reviews confirming that the P15 card reader is FLUSH while the P1 is NOT FLUSH.
But I haven't (yet) seen that explanation for other models.
Which ThinkPad models have a FLUSH vs NOT-FLUSH SD card reader.
P15 = FLUSH
T15 = FLUSH (added info 22Apr2022)
T15g= FLUSH (added info 22Apr2022)
P1= NOT FLUSH
X1 = ???

My questions now have been more or less answered by myself. I had "hands on" experience today (22Apr2022) with a T15g Gen 1 laptop and can confirm that it is FLUSH!
Thanks!
FRANK