Mondo Mod

That's a stripped out Hodaka, Ace 90 or 100.

Small Honda twin. CL160?

Yes, it's the right shade of blue 1967 MY.

Looks like 1965 MY

CA-Series...

If the handlebars are tubular chrome then CA77, if they're body coloured pressed metal - C77, who's got good eyesight?

K model engine in a bike that looks like a sportser

Going by what I read here - https://en.wikipedia.org/wiki/Harley-Davidson_Sportster - I think the best is to call it a Model K.

Panhead engine. Harley Davidson Panhead custom chopper.

1959 Oldsmobile in the background.

Honda? Suzuki?

T20 X6 (Super Six in UK)

Triumph TS 20 Scrambles Cub

Lodola?

BSA?

Yamaha?

80cc, YG1, I can find red, blue & yellow but not gold.