As I thought, some leaks for Famitsu from a couple weeks ago have dropped.  I will continue to update this as the full top 10 & 30 are released.

Software sales

Top 30

01./00. [NSW] New Pokemon Snap <ACT> (Pokemon Co.) {2021.04.30} (¥5.980) – 147.742 / NEW <40-60%>
02./02. [NSW] Monster Hunter Rise # <ACT> (Capcom) {2021.03.26} (¥7.990) – 102.952 / 2.073.323 <80-100%> (+19%)
03./03. [NSW] Super Mario 3D World + Bowser’s Fury <ACT> (Nintendo) {2021.02.12} (¥5.980) – 27.096 / 701.758 <80-100%> (+69%)
04./01. [PS4] NieR Replicant ver.1.22474487139… <RPG> (Square Enix) {2021.04.22} (¥7.800) – 25.601 / 134.439 <80-100%> (-76%)
05./04. [NSW] Momotaro Dentetsu: Showa, Heisei, Reiwa mo Teiban! <TBL> (Konami) {2020.11.19} (¥6.300) – 23.774 / 2.148.835 <80-100%> (+91%)
06./05. [NSW] Ring Fit Adventure # <HOB> (Nintendo) {2019.10.18} (¥7.980) – 16.928 / 2.539.637 <80-100%> (+38%)
07./06. [NSW] Mario Kart 8 Deluxe <RCE> (Nintendo) {2017.04.28} (¥5.980) – 15.686 / 3.809.638 <80-100%> (+52%)
08./07. [NSW] Minecraft # <ADV> (Microsoft Game Studios) {2018.06.21} (¥3.600) – 13.607 / 1.924.188 <80-100%> (+48%)
09./08. [NSW] Animal Crossing: New Horizons # <ETC> (Nintendo) {2020.03.20} (¥5.980) – 11.947 / 6.755.379 <80-100%> (+44%)
10./09. [NSW] Super Smash Bros. Ultimate # <FTG> (Nintendo) {2018.12.07} (¥7.200) – 10.840 / 4.260.336 <80-100%> (+60%)
11./16. [NSW] Super Mario Party # <ETC> (Nintendo) {2018.10.05} (¥5.980) – 9.562 / 1.875.146 <80-100%> (+147%)
12./00. [PS4] R-Type Final 2 # <STG> (Granzella) {2021.04.29} (¥5.800) – 8.693 / NEW <60-80%>
13./14. [NSW] Clubhouse Games: 51 Worldwide Classics <TBL> (Nintendo) {2020.06.05} (¥3.980) – 7.442 / 692.819 <80-100%> (+66%)
14./12. [NSW] Splatoon 2 # <ACT> (Nintendo) {2017.07.21} (¥5.980) – 6.629 / 3.852.350 <80-100%> (+40%)
15./00. [PS5] Returnal <ADV> (Sony Interactive Entertainment) {2021.04.30} (¥7.900) – 6.573 / NEW <40-60%>
16./13. [NSW] Pokemon Sword / Shield # <RPG> (Pokemon Co.) {2019.11.15} (¥5.980) – 6.547 / 4.039.080 <80-100%> (+44%)
17./00. [NSW] R-Type Final 2 # <STG> (Granzella) {2021.04.29} (¥5.800) – 6.452 / NEW <60-80%>
18./18. [PS4] Judgment [2][New Price Edition] <ADV> (Sega) {2021.04.23} (¥1.800) – 3.383 / 6.575 <60-80%> (+6%)
19./20. [NSW] Story of Seasons: Pioneers of Olive Town <SLG> (Marvelous) {2021.02.25} (¥5.980) – 3.243 / 278.169 <80-100%> (+22%)
20./25. [NSW] Super Mario Maker 2 # <ACT> (Nintendo) {2019.06.28} (¥5.980) – 2.886 / 1.090.748 <80-100%> (+46%)
21./11. [PS5] Judgment <ADV> (Sega) {2021.04.23} (¥1.800) – 2.881 / 8.420 <60-80%> (-48%)
22./27. [NSW] Human: Fall Flat <ADV> (Teyon Japan) {2020.06.25} (¥3.500) – 2.815 / 143.507 <80-100%> (+55%)
23./30. [NSW] New Super Mario Bros. U Deluxe <New Super Mario Bros. U New Super Luigi U> <ACT> (Nintendo) {2019.01.11} (¥5.980) – 2.715 / 1.057.247 <80-100%> (+59%)
24./24. [NSW] The Legend of Zelda: Breath of the Wild # <ADV> (Nintendo) {2017.03.03} (¥6.980) – 2.697 / 1.811.658 <80-100%> (+33%)
25./00. [NSW] Super Mario Odyssey # <ACT> (Nintendo) {2017.10.27} (¥5.980) – 2.666 / 2.230.196 <80-100%> (+65%)
26./26. [NSW] Little Nightmares II <ADV> (Bandai Namco Entertainment) {2021.02.10} (¥3.600) – 2.445 / 68.859 <80-100%> (+32%)
27./28. [NSW] Fitness Boxing 2: Rhythm & Exercise <HOB> (Imagineer) {2020.12.03} (¥5.800) – 2.288 / 93.822 <80-100%> (+28%)
28./00. [NSW] Taiko no Tatsujin: Drum ‘n’ Fun! <ACT> (Bandai Namco Entertainment) {2018.07.19} (¥6.100) – 2.231 / 590.126 <80-100%>
29./00. [NSW] Fishing Spirits: Nintendo Switch Version # <SPT> (Bandai Namco Entertainment) {2019.07.25} (¥5.700) – 2.157 / 583.096 <80-100%>
30./00. [NSW] Luigi’s Mansion 3 <ACT> (Nintendo) {2019.10.31} (¥5.980) – 2.155 / 764.258 <80-100%>

Hardware sales

So NSW hardware sales continue to increase over last years totals... wonder if that "pandemic" bump theory still holds up...

NSW 2021 W18 > 2020 W18+19combined

Those software sales are all over the place! I think numbers 4 and 8 are missing from what i can make out but surprisingly low sales from about 5 onwards and not in order.

Not blaming the OP in any way, just to be clear.

Switch is on fire! PS5 continues to do well (hardware wise at least), it is now comfortably ahead of PS4 launch aligned.

This is a leaked, incomplete software list.  It only shows the top 3 Switch, top 3 PS4, and top 2 PS5 software for the week.  That's also why the current week rankings are listed as 00. for all games.  The full top 10 will release Thursday and the top 30 Friday (at the latest).

Edit: I've updated the OP to reflect the above

20+ million by the end of the month ?

Insane numbers for Switch , and actually decent numbers for PS5, I guess both were boosted by the first few days of the Golden Week.

MHR doing more than 100k

SM3DW+BF's performance is simply amazing, dat boost.

Good debut for New Pokemon Snap and expected drop for Nier Replicant.

There's generally a slump in sales after Goldenweek, but it's possible

Yep, i've since realised but thanks for explanation anyway.