Quick question about stinking cloud

[Devronq]

Stinking cloud creates a bank of fog like that
created by fog cloud, except that the vapors
are nauseating. Living creatures in the
cloud become nauseated. This condition
lasts as long as the creature is in the cloud
and for 1d4+1 rounds after it leaves. (Roll
separately for each nauseated character.)
Any creature that succeeds on its save but
remains in the cloud must continue to save
each round on your turn.

Does this mean that stinking cloud has the same obscuring sight and granting concealment effect?

Im asking because i noticed incendiary cloud stats it blocks vision as fog cloud but stinking cloud doesn't specify

Also cloud kill or any other spells that specify they act like fog cloud do they have the same obscuring sight and granting concealment effect?

[NNescio]

Stinking cloud creates a bank of fog like that
created by fog cloud, except that the vapors
are nauseating. Living creatures in the
cloud become nauseated. This condition
lasts as long as the creature is in the cloud
and for 1d4+1 rounds after it leaves. (Roll
separately for each nauseated character.)
Any creature that succeeds on its save but
remains in the cloud must continue to save
each round on your turn.

Does this mean that stinking cloud has the same obscuring sight and granting concealment effect?

Im asking because i noticed incendiary cloud stats it blocks vision as fog cloud but stinking cloud doesn't specify

Also cloud kill or any other spells that specify they act like fog cloud do they have the same obscuring sight and granting concealment effect?

Yes.

Stinking Cloud and Cloudkill work exactly like Fog Cloud except as otherwise noted.

The mechanics are similar for spells that inherit from another earlier level spell, like the polymorph line.