How are the names of these type of transistor configurations?

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sys_eng00

Joined Oct 2, 2025
5
1)1759802873484.png
2)1759802901300.png
3) 1759802934148.png

4)1759802975115.png
this look like part of current mirror but unlike it has one PNP (a diode) and one NPN

5)1759803003314.pngis this cascode for PNP?

6)1759803177092.png what is this Q1, Q2, Q7, Q8, Q5, Q6 nest?

7)1759803259632.png how this start up circuit have a guaranteed high at V_bias point?
 
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