Following up on the draft thus far here's the guys who've signed
03.0104 - Thomas Hatch $573,900(0 savings)
04.0134 - Tyson Miller $500,000($70,300 over slot)
05.0164 - Bailey Clark $450,000($128,200 over slot)
06.0194 - Chad Hockin $241,000(0 saving)
07.0224 - Michael Cruz $75,000($111,000 savings)
08.0254 - Stephen Ridings $120,000($53,800 savings)
09.0284 - Duncan Robinson $30,000($132,300 savings)
10.0314 - Dakota Mekkes $275,000($118,400 over slot)
Non-slot guys
13.0404 - Wyatt Short
15.0464 - Jed Carter
16.0494 - Holden Cammack
17.0524 - Zack Short
18.0554 - Marc Huberman*
19.0584 - Matt Swarmer*
20.0614 - Colton Freeman
21.0644 - Samuel Tidaback
23.0704 - Delvin Zinn
25.0764 - Trent Giambrone
27.0824 - Connor Myers
29.0884 - Tyler Peyton*
32.0974 - Zachary Davis
38.1154 - Tolly Filotei
Guys who looking like they might sign
11.0344 - Michael Rucker*
33.1004 - Nathan Sweeney
Players unlikely to sign
12.0374 - Trey Cobb
26.0794 - Austin Jones
30.0914 - Montana Parsons
31.0944 - Brenden Heiss
34.1034 - Davis Daniel
35.1064 - Ryan Kreidler
36.1094 - Jake Slaughter
39.1184 - Anthony Block
40.1214 - Deaundre Roberts
Players who've given no indication one way or another
14.0434 - Parker Dunshee
22.0674 - Dante Biasi
24.0734 - Reynaldo Rivera
28.0854 - Rian Bassett
37.1124 - Davis Moore
Hatch and Cobb are still in the college WS and the cubs have said they can wait until after that. I'm pretty sure Hatch will sign. As of right now the cubs are +$297,100 in bonus money. Hatch was right around his BA ranking so I doubt he takes much more than slot. Ditto for Clark and Miller. Mekkes is an interesting arm but he's a reliever and doesn't have to tier stuff despite his high k/9 rates. So, I doubt he's going to get much more than slot. If I'm not mistaken, you can offer anyone outside the top 10 rounds $100k without it messing with your slot money but anything over that comes out of it. If I had to guess, the money left over is going toward Zinn, Rivera and/or Cobb as they are the 3 highest rated guys who aren't unlikely to sign though theoretically you might be able to convince Deaundre Roberts, Ryan Kreidler, Davis Daniel, or Brenden Heiss to take money rather than going to college as they are top 500 guys.
Edit: Updated July 8th
Also with Hatch signed the cubs have a -$19,800 bonus pool but you can go over I believe 5% without penalty meaning they have $92,455 left to play with on top of I believe $100k they can offer any non slot player