I figured it would come in handy to know what cameras I do have and what FW versions they are.

So, I made a list. This is what we can use for testing as of 2022-08.
The general focus was on anything supported that did not shoot RAW natively.
Anything that does typically won't be on my list.

O: CHDKPTP tests performed.

PowerShot A Series (all - until another gets ported)
A410 100F O
A420 100B O
A430 100B O
A450 100D O
A460 100D O
A470 101B O
A480 100B O
A490 100E O
A495 100F O
A530 100A O
A540 100B O
A550 100C O
A560 100A O
A570 101A O
A580 101B O
A590 101B O
A610 100E O
A620 100F O
A630 100C O
A640 100B O
A650 100D O
A700 100B O
A710 100A O
A720 100C O
A800 100B O
A810 100E O
A1000 100B O
A1100 100C O
A1200 100C O
A1300 100E O
A1400 100B O
A2000 100C O
A2100 100A O
A2200 100D O
A2300 100F O
A2400 100D O
A2500 100A O
A2600 100D O
A3000 100D O
A3100 100D O
A3200 100A O
A3300 100D O
A3400 101A O
A4000 101B O

PowerShot D Series (missing D30)
D10 100B O
D20 100B O

PowerShot ELPH Series (all - until another gets ported)
IXUS 115 (ELPH100) 101C O
IXUS125 (ELPH110) 100E O
IXUS127 101A O (same camera as Ixus 125, only in black...)
IXUS132 (ELPH115) 100B O
IXUS135 (ELPH120) 100B O
IXUS140 (ELPH130) 100B O
IXUS145 (ELPH135) 100C O
IXUS150 (ELPH140) 100C O
IXUS155 (ELPH150) 100B
IXUS160 (ELPH160) 100A O
IXUS170 (ELPH170) 100A
IXUS175 (ELPH180) 100C O
IXUS185 (ELPH185) 100A O
IXUS220 (ELPH300) 101A O
IXUS230 (ELPH310) 100e O
IXUS240 (ELPH320) 100D O
IXUS 255 (ELPH330) 100F O
IXUS 275 (ELPH350) 100A
IXUS 310 (ELPH500) 101A O

PowerShot G Series (G7, THE ONE WITHOUT NATIVE RAW and a few others)
G7 100I O
G9 100D O
G11 100K O

PowerShot N Series (THE ONE - ingnoring the Facebook version)
N 100A

PowerShot S Series (ALL WITHOUT NATIVE RAW)
S1IS 102
S2IS 100F O
S3IS 100A O
S5IS 101A O
S80 100G O

PowerShot SD Series (all - until another gets ported)
IXUSIZOOM (SD30) 100G O
IXUS30 (SD200) 100K O
IXUS40 (SD300) 100K O
IXUS50 (SD400) 101A O
IXUSW (SD430) 110A O
IXUS55 (SD450) 100D O
IXUS700 (SD500) 101B O
IXUS750 (SD550) 100G O
IXUS60 (SD600) 100A O
IXUS65 (SD630) 100A O
IXUS800 (SD700) 100B O
IXUS75 (SD750) 101A O
IXUS85 (SD770) 100A O
IXUS100 (SD780) 100C O
IXUS90 (SD790) 100D O
IXUS850 (SD800) 100D O
IXUS950 (SD850) 100C O
IXUS860 (SD870) 100C O
IXUS870 (SD880) 100E O
IXUS970 (SD890) 100C O
IXUS900 (SD900) 100C O
IXUS120 (SD940) 103B O
IXUS960 (SD950) 100C O
IXUS110 (SD960) 101D O
IXUS990 (SD970) 100A
IXUS200 (SD980) 101C O
IXUS980 (SD990) 100E O
IXUS980 (SD990) 101B
IXUS70 (SD1000) 101A O
IXUS80 (SD1100) 101B O
IXUS95 (SD1200) 100C O
IXUS105 (SD1300) 100D O
IXUS130 (SD1400) 100C O
IXUS300 (SD4000) 100D O
IXUS1000 (SD4500) 100D O

PowerShot SX Series (incomplete after 2009)
SX10 102B O
SX20 100F O
SX30 100E O
SX40 100I
SX100 100C O
SX110 100B O
SX120 100B O
SX130 101F O
SX150 100A O
SX160 100A
SX170 100A O
SX200 100D O
SX210 100C O
SX220 101E (matches 101C)
SX230 100B
SX240 101A
SX260 101A O
SX270 102C O
SX280 102C O
SX400 100B O
SX410 100B O
SX420 100A
SX500 100C
SX510 100D
SX520 100B
SX530 100A O
SX610 100A
SX620 100B
SX700 100E O
SX710 100A O

PowerShot TX Series (THE ONE)
TX1 101B O