Any Parodia specialist? (Two Parodias)

[mmcavall]

Anyone could help me identifying these two similar but different Parodias?
I have my guesses but as there are several similar species I wouldn't like to influence your's.
Thanks a lot!

Plant number 1 has totally yellow flowers and straight, needle-like spines:

IMG-20230406-WA0093-01_copy_749x800.jpg (163.94 KiB) Viewed 6741 times

IMG-20230406-WA0090-01_copy_577x800.jpg (135.8 KiB) Viewed 6741 times

20230402_123119-01_copy_800x800.jpg (223.42 KiB) Viewed 6741 times

Plant number two has hooked spines. The flower is also yellow but with some orange in the center of the flower (pistils?):

20220925_101621-02_copy_800x773.jpg (110 KiB) Viewed 6741 times

IMG-20230406-WA0095-01_copy_625x800.jpg (146.61 KiB) Viewed 6741 times

IMG-20230406-WA0101-01_copy_800x800.jpg (206.36 KiB) Viewed 6741 times

20220925_101621-01_copy_800x800.jpg (156.81 KiB) Viewed 6741 times

[anttisepp]

P. penicillata v nivosa
P. chrysacanthion
P. mutabilis/aureispina

[mmcavall]

P. penicillata v nivosa
P. chrysacanthion
P. mutabilis/aureispina

Thank you anttisepp! But...which is which?

My guesses were:
Plant 1: P. chrysacanthion
Plant 2: P. microsperma aureispina

[anttisepp]

You shaw 3 different species: 1st species pic 1-2,
2nd pic 3,
3rd pic 4-7.

[mmcavall]

Picture 3 is the same plant of pic 1 -2, unless I have different plants and have not noticed

[mmcavall]

Flowers of pic 1- 2 are yellow, not red

[anttisepp]

ok. Looks very similar to penicillata nivosa with white spines.

[mmcavall]

ok. Looks very similar to penicillata nivosa with white spines.

Yes, anttisep, I saw what did you saw .... your suggestion made me notice that the spines in the first two pictures are whiter. Maybe there is some variation among the plants or some hybridization? But the flowers are all the same yellow.
Thank you for helping me. I agree with your suggestions