Diaz, Kipnis, and Urshela would all make the playoff roster if it started today and everyone was healthy. There's no need for either Goody or McAllister. Especially if you have one of Tomlin, Clevinger, or Salazar available in the bullpen. There's no need to have a righty with a high strikeout rate as your 7th reliever when you've got Shaw in that same role. Diaz's offensive abilities and Urshela's defensive abilities outweigh what either Goody or McAllister would provide on a game by game basis, and it's not close.
As far as Tomlin vs Clevinger in the eyes of Francona/coaching staff, I'll just agree to disagree with you on that, though there is still a good chunk of the regular season left where things can change.
We aren't going below 11 pitchers so Kluber, Carrasco, Bauer, Miller, Allen, Shaw are automatic locks so that leaves 5 guys.
Smith, Otero, McAllister are all veterans that Francona will probably want on the roster. Numbers wise Smith has been the worst of the three bullpen arms in ERA, but FIP and other stats are way in his favor. Tomlin is likely to be chosen over Clev because Francona trusts him more. The numbers between Tomlin and Clevinger aren't as far apart as they look if you take advanced metrics which means if stats are fairly close to one another then it will go towards Tomlin. Last spot will be between Olson, Goody and Salazar, with Olson being perfect so far and a lefty, it is likely he gets the spot. McAllister, Otero and Goody have all about the same stats, so being a veteran is Francona's choice. It is not like there is a wrong choice since the numbers say either way should be equal on paper. Salazar I feel will be left off if he isn't healthy. It is hard to put him on the roster over a McAllister/Otero since they are trustworthy guys in the pen.
So in the first round going by the numbers plus Francona's preferences the pitching staff will be (Likely won't use a 4th starter in round one):
Starters:
Kluber, Carrasco, Bauer
LRP:
Tomlin, McAllister, Otero
MRP/CP
Olson, Shaw, Miller, Allen. Smith
Position players
C: Gomes/Perez
1B/DH: Santana/EE
2B: Kipnis
SS: Lindor
3B: Ramirez
RF: Bruce
CF: Chisenhall
LF: Brantley
That is my lineup position wise against a RH pitcher if everyone is healthy. It will change of course against a lefty and I know Zimmer isn't starting in CF, but if Brantley and Chis are 100% for the playoffs you kind of cannot take out either of their bats out of the lineup, while Bruce is a deep threat. Leaves four on the bench
Bench:
Zimmer, Guyer, Jackson, Urshela
I feel Francona will go with defense over hitting when it comes to the first round. If Kipnis isn't healthy then we will see a Diaz while Ramirez starts at 2B. If Brantley is still not back we will see Almonte/Gonzalez as a bench guy, but I feel Francona wants Urshela on the roster. I am not disagreeing with the fact a guy like Diaz will make more impact possibly, but Francona doesn't like having a short pen.
I wouldn't even be afraid to have Brantley and Kipnis come off the bench in the first round if they don't get back until close to the season ends, but I doubt that will happen.