Times Concise Quintagram Ninas

The Times likes hiding connections between the five answers in the concise quintagram so I thought I'd put them together as I find them and leave them also as puzzles for people to solve. To fill out the preview to avoid spoilers, a quintagram is a set of five crossword clues where you are given the letters needed to solve all five. A Nina is named after the daughter of cartoonist Al Hirschfield who hid the name in many of his drawings, and has been adopted by the crosswording community to refer to any hidden theme in a puzzle. 

2624:

KIND, BEING, NATURE, INTEREST, RESOURCES

All can follow 'human'

2625:

POP, FINE, PLASTIC, ABSTRACT, COMMERCIAL

All can be followed by 'art'

2626:

AIDA, TIPSY, CLUEDO, POINTER, HINTERLAND

All start with a word for a nudge

2627:

WAR, DEN, CONCORDE, WILLIAMS, CONFERENCE

All cultivars of pear (reading WAR+DEN as one)