Source PGN: https://lichess.org/study/G2vBEYeh.pgn (48 games, World Championship 1984/85 section covering the 1984 48-game match).
Data below were computed by replaying each mainline and checking material after every ply.
Category definitions at ENTRY (both sides still have pawns at entry):
Q-entry: kings + queens + pawns only; R-entry: kings + rooks + pawns only; M-entry: kings + bishops/knights + pawns only.
"First endgame move" = first ply where the category appears. "Final material" = material on the last move (pawns may have disappeared for one side later).

## Q Queen endgame
Round 7 | Result 1-0 | ECO D34 | Opening Tarrasch Defense: Classical Variation, Main Line
First Q-entry: ply 86 (43...Kxf8); entry material: WQ1/BQ1 WR0/BR0 WB0/BB0 WN0/BN0 WP5/BP4
Final material (last move): WQ1/BQ1 WR0/BR0 WB0/BB0 WN0/BN0 WP5/BP3
Opening phase (first 10 moves): 1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.Nc3 Nc6 9.Bg5 cxd4 10.Nxd4 h6

Round 32 | Result 1-0 | ECO E12 | Opening Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack
First Q-entry: ply 63 (32.Qxg5); entry material: WQ1/BQ1 WR0/BR0 WB0/BB0 WN0/BN0 WP5/BP4
Final material (last move): WQ1/BQ1 WR0/BR0 WB0/BB0 WN0/BN0 WP3/BP2
Opening phase (first 10 moves): 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.Qc2 Nd7 8.Nxd5 exd5 9.Bg5 f6 10.Bf4 c5


## R Rook endgame
Round 6 | Result 0-1 | ECO E15 | Opening Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line
First R-entry: ply 79 (40.Rxb5); entry material: WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP3/BP3
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP0/BP1
Opening phase (first 10 moves): 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 O-O 8.O-O d5 9.Ne5 c6 10.Bc3 Nfd7

Round 11 | Result 1/2-1/2 | ECO A15 | Opening English Opening: Anglo-Indian Defense, Queen's Indian Formation
First R-entry: ply 72 (36...Rxd6); entry material: WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP6/BP6
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP6/BP5
Opening phase (first 10 moves): 1.Nf3 Nf6 2.c4 b6 3.g3 c5 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.e3 e6 9.d4 Qe7 10.Nc3 Na6

Round 19 | Result 1/2-1/2 | ECO D37 | Opening Queen's Gambit Declined: Three Knights Variation
First R-entry: ply 49 (25.Rxd5); entry material: WQ0/BQ0 WR2/BR2 WB0/BB0 WN0/BN0 WP5/BP5
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP3/BP2
Opening phase (first 10 moves): 1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 h6 6.Bxf6 Bxf6 7.Qd2 Nc6 8.e3 O-O 9.Rc1 a6 10.Be2 dxc4

Round 21 | Result 1/2-1/2 | ECO D37 | Opening Queen's Gambit Declined: Three Knights Variation
First R-entry: ply 49 (25.axb5); entry material: WQ0/BQ0 WR2/BR2 WB0/BB0 WN0/BN0 WP5/BP4
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP3/BP3
Opening phase (first 10 moves): 1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 h6 6.Bxf6 Bxf6 7.Qd2 dxc4 8.e4 c5 9.d5 exd5 10.e5 Bg5

Round 45 | Result 1/2-1/2 | ECO B83 | Opening Sicilian Defense: Scheveningen Variation, Modern Variation
First R-entry: ply 58 (29...Rxe4); entry material: WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP5/BP5
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP5/BP5
Opening phase (first 10 moves): 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.O-O Nc6 8.Be3 O-O 9.f4 a6 10.a4 Re8

Round 48 | Result 1-0 | ECO C42 | Opening Petrov's Defense: Classical Attack, Jaenisch Variation
First R-entry: ply 69 (35.Rxe6); entry material: WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP5/BP4
Final material (last move): WQ0/BQ0 WR1/BR1 WB0/BB0 WN0/BN0 WP3/BP1
Opening phase (first 10 moves): 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6 7.O-O Be7 8.c4 Nf6 9.Nc3 O-O 10.h3 dxc4


## M Minor-piece endgame
Round 9 | Result 1-0 | ECO D34 | Opening Tarrasch Defense: Classical Variation, Main Line
First M-entry: ply 71 (36.exd4); entry material: WQ0/BQ0 WR0/BR0 WB1/BB1 WN1/BN1 WP6/BP6
Final material (last move): WQ0/BQ0 WR0/BR0 WB0/BB1 WN1/BN0 WP3/BP0
Opening phase (first 10 moves): 1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nf6 6.Bg2 Be7 7.O-O O-O 8.Nc3 Nc6 9.Bg5 cxd4 10.Nxd4 h6

Round 15 | Result 1/2-1/2 | ECO E15 | Opening Queen's Indian Defense: Fianchetto Variation, Check Variation, Intermezzo Line
First M-entry: ply 63 (32.Bxb7); entry material: WQ0/BQ0 WR0/BR0 WB1/BB1 WN1/BN1 WP4/BP3
Final material (last move): WQ0/BQ0 WR0/BR0 WB1/BB1 WN1/BN1 WP2/BP2
Opening phase (first 10 moves): 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 O-O 8.O-O d5 9.cxd5 Nxd5 10.Nc3 Nd7

Round 40 | Result 1/2-1/2 | ECO D58 | Opening Queen's Gambit Declined: Tartakower Defense
First M-entry: ply 94 (47...Kxd5); entry material: WQ0/BQ0 WR0/BR0 WB0/BB0 WN1/BN1 WP3/BP2
Final material (last move): WQ0/BQ0 WR0/BR0 WB0/BB0 WN1/BN1 WP2/BP1
Opening phase (first 10 moves): 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 b6 8.Be2 Bb7 9.Bxf6 Bxf6 10.cxd5 exd5