25 walk on by

Sleepwalker

...or should I say, slower than walking

Night Creeper?

One of those answers is pretty warm

one step beyond

25. creep

1 – Light The Candle (A New Flame)
2 – Death of a Jehovah
3 – Sipping A Cup of Tea
4 – Stop The Wizard’s Threat
5 – Whiskey In Club-Class (Spirit in the Sky)
6 – Drop It (Let It Be)
7 – Nice Tune (Beautiful Noise)
8 – It Actually Hurts A Little
9 – Leading Actor or Actress (Stars)
10 – Greatly Appreciated (Thank You Very Much)
11 – Ronnie (Rocketman)
12 – Shakespeare’s  Womaniser
13 – Let’s Try Something New
14 – Before The Dentist Commences (Comfortably Numb)
15 – Most of Us (The Gambler)
16 – Glass of Pills
17 – Opposing Moneytree’s Predictions
18 – 1929 (Crash)
19 – Liberals Shelter Lucifer (Sympathy with the Devil)
20 – The Lasting Result of Lockdown (Changes)
21 - Whispers
22 – Regan’s Dilemma (Devil Inside)
23 – FFS, Here We Go Again! (I Don't Like Monday's)
24 – Psychiatric Relief
25 – Secret Lemonade Drinker (Creep)
26 – Boxing Day Snack (Cold Turkey)
27 – Shrewd Letter
28 – J.K. Rowling (Lady Writer)
29 – Shotgun (Double Barrel)
30 – A Conversation With Brian Connolly (Sweet Talking Guy)

17 who wants to be a millionaire

and 17 is Hot Chocolate

16 hi hi hi

- Irony, but not correct

Idol features in different clue, not Hot Chocolate

17 No doubt about it