I suggest both efi and bios_grub partitions as adding an efi partition to beginning of drive later can be difficult. But efi partition will only be used by UEFI install or bios_grub by BIOS/Legacy install. If gpt partitioned then you can convert from BIOS boot to UEFI. But if MBR you cannot convert and do not need those partitions.
I do not suggest a separate /boot, but do keep / (root) smaller. If dual booting with other Debian based I would just leave /home inside / and use data partitions for all data. Then you can easily mount the same data partition in all installs. I have many Ubuntu installs and do exactly that.
For the Total space you want for Ubuntu:
Ubuntu's standard install is just / (root) & swap, but it is better to add another partition for /home if allocating over 30GB.:
Only if gpt - all partitions in gpt are primary:
gpt: 250 MB efi FAT32 (for UEFI boot or future use for UEFI, you only can have one, so if already existing do not attempt another)
gpt: 1 MB bios_grub no format (for BIOS boot not required for UEFI)
gpt or MBR(msdos)
Ubuntu partitions - smaller root only where hard drive space is limited.
If total space less than about 30GB just use / not separate /home or standard install.
1. 10-25 GB Mountpoint / primary or logical beginning ext4(or ext3)
2. all but 2 GB Mountpoint /home logical beginning ext4(or ext3)
3. 2 GB Mountpoint swap logical
Depending on how much memory you have you may not absolutely need swap but having some is still recommended. I do not hibernate (boots fast enough for me) but if hibernating then you need swap equal to RAM in GiB not GB. And if dual booting with windows a shared NTFS partition is also recommended. But you usually cannot create that as part of the install, just leave some space. Or partition in advance (recommended).
One advantage of partitioning in advance is that the installer will use the swap space to speed up the install. Thanks Herman for the tip.
Instead of /home create as many 25GB future root partitions as you want. I created two 100GB data partitions on my new 650GB drive 3 years ago and left the rest unallocated. I then installed Ubuntu, and the then beta. But I left those partitions and with every version I added another 25GB / partition. And If I wanted to test another 25GB. I now have so many I cannot keep track, have to turn off os-prober as it finds too many, It is time to houseclean as some of the old installs are now obsolete.
Splitting home directory discussion and details:
Link is on move home but see post by bodhi.zazen on data partition #6