Yam 250 scooters are good, they are also very nippy and have a horrendous insurance tax – first company I tried refused to insure me (big ncd, parked off road) after them it was just steep. Dropping to a Harley sportster saw my premium go down by £300. They’re great commuters other than they fact that they encourage you too ride fast! However they are not a motorbike and after three or so years I decided to go back to a proper motorbike.
R80s were getting snapped up for cafe racer conversion but that fad may have passed. K75, or k1100rs are good bikes, had a 1100rs as my work bike and it was fast and comfortable. K1100lt is a pig and avoid.
Mutts are just shit bought by people with an image issue .
Honda cb750 for old school thump?
Himalaya looks like a really good choice and would be my choice from those listed above.
Check on ULEZ if going into a city, my last two bikes both needed work to be ulez compliant (883 sportster and Honda c90), not a problem just extra cost.